Heart Failure

The “twincretin” tirzepatide might become part of the “arsenal” against diabetic kidney disease, new research suggests. Notably, the drug significantly reduced the likelihood of macroalbuminuria, in a prespecified subanalysis of the SURPASS-4 clinical trial.

“Once-per-week tirzepatide compared to [daily] insulin glargine treatment resulted in a meaningful improvement in estimated glomerular filtration rate (eGFR) decline and reduced urine albumin-to-creatinine ratio (UACR) and the risk of end stage kidney disease (ESKD) – with low risk of clinically relevant hypoglycemia in participants with type 2 diabetes at high cardiovascular risk and varying degrees of chronic kidney disease (CKD),” lead investigator Hiddo J. L. Heerspink, PhD, PharmD, summarized in an email to this news organization.

The U.S. Food and Drug Administration has just approved tirzepatide (Mounjaro, Eli Lilly) – a novel, glucose-dependent insulinotropic polypeptide (GIP) combined with a glucagonlike peptide-1 (GLP-1) receptor agonist – to treat glycemia in patients with type 2 diabetes, based on five pivotal SURPASS trials.

Dr. Heerspink presented the new findings about tirzepatide’s impact on kidney function in an oral session at the annual scientific sessions of the American Diabetes Association.

40% reduced risk of kidney function decline

The main results of SURPASS-4 were published in the Lancet in October 2021, and showed that tirzepatide appeared superior to insulin glargine in lowering hemoglobin A1c in patients with type 2 diabetes at high cardiovascular risk who were inadequately controlled on oral diabetes treatments.

Now, Dr. Heerspink has shown that patients who received tirzepatide as opposed to insulin glargine were significantly less likely to have kidney function decline that included new-onset macroalbuminuria (hazard ratio, 0.59; P < .05).

“These are very large benefits and clearly indicate the potential of tirzepatide to be a very strong kidney protective drug,” said Dr. Heerspink, from the department of clinical pharmacy and pharmacology, University Medical Center Groningen (the Netherlands).

“Based on results from the SURPASS-4 trial, tirzepatide has significant kidney-protective effects in adults with type 2 diabetes with high cardiovascular risk and largely normal kidney function,” Christine Limonte, MD, chair of the session in which the analysis was presented, agreed, in an email to this news organization.

The approximate 40% reduced risk of kidney function decline in this population “is important because it suggests that this novel agent may contribute to the growing arsenal for preventing and treating diabetic kidney disease,” added Dr. Limonte, a clinical research fellow in the division of nephrology, University of Washington, Seattle.

“Over the last several years,” she noted, “sodium glucose cotransporter-2 [SGLT2] inhibitors and GLP-1 receptor agonists have been identified as having significant kidney-protective effects in type 2 diabetes, and as such are becoming first-line agents in the treatment of diabetic kidney disease.”

Additional studies are needed, she added, to assess the impacts of tirzepatide compared to these agents (particularly GLP-1 receptor agonists, which overlap in their mechanism of action).

“With the growing number of therapeutic options for diabetic kidney disease, future research should also focus on identifying combinations of agents which benefit individuals in a ‘targeted’ manner,” according to Dr. Limonte.

“Ensuring accessibility to kidney-protective agents by promoting access to health care and reducing drug costs is essential to improving outcomes in diabetic kidney disease,” she added.

Strongest reduction seen in risk of new macroalbuminuria

One in three adults with diabetes has CKD, according to a press release issued by the ADA. Therefore, there is a need for therapies to reduce the development and progression of CKD in patients with type 2 diabetes.

The prespecified analysis of SUPRESS-4 investigated potential renoprotective effects of tirzepatide.

The trial enrolled 1,995 patients with type 2 diabetes who were at increased risk of cardiovascular disease. The patients had a mean age of 63.6 years and a mean hemoglobin A1c of 8.5%.

Most patients had normal kidney function. The mean eGFR based on the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equation was 81.3 mL/min per 1.73 m².

Few patients (17%) had moderately or severely reduced kidney function (eGFR <60 mL/min per 1.73 m²). Around a quarter of the patients (28%) had microalbuminuria (UACR 30-300 mg/g) and 8% had macroalbuminuria (UACR >300 mg/g).

The patients were randomized to receive a weekly injection of 5, 10, or 15 mg tirzepatide or a daily individualized injection of insulin glargine starting at 10 IU/day at bedtime, titrated to a fasting blood glucose <100 mg/dL, in addition to existing oral glucose-lowering agents. The primary outcomes in the subanalysis were:

• Endpoint 1: a composite of ≥40% decline in eGFR from baseline, renal death, progression to ESKD, and new-onset macroalbuminuria.
• Endpoint 2: the same as endpoint 1 excluding new-onset macroalbuminuria.

During a median follow up of 85 weeks and up to 104 weeks, patients who received tirzepatide versus insulin glargine were significantly less likely to reach endpoint 1 but not endpoint 2.

In addition, tirzepatide “very strongly” reduced the risk of new-onset macroalbuminuria, compared to insulin glargine, by approximately 60% in the complete study cohort (hazard ratio, 0.41; P < .05), Dr. Limonte noted.

Tirzepatide also reduced the risk of a >40% decline in eGFR, but this effect was not statistically significant, possibly because this outcome was underpowered. There were also too few kidney deaths and progressions to ESKD to meaningfully assess the effects of tirzepatide on these outcomes.

Therefore, Dr. Limonte noted, “it is likely that tirzepatide’s significant benefit on composite endpoint 1 was largely driven by this agent’s impact on reducing macroalbuminuria onset [explaining why a significant benefit was not seen with composite endpoint 2, which excluded new-onset macroalbuminuria].”

The study was funded by Eli Lilly. Dr. Heerspink disclosed that he is a consultant for AstraZeneca, Bayer AG, Boehringer Ingelheim, Chinook Therapeutics, CSL Behring, Gilead Sciences, Goldfinch Bio, Janssen Research & Development, Mitsubishi Tanabe Pharma, Mundipharma, and Traveere Pharmaceuticals, and has received research support from AstraZeneca, Boehringer Ingelheim, and Novo Nordisk.

Dr. Limonte disclosed that she receives funds from the American Kidney Fund’s Clinical Scientist in Nephrology Award.

A version of this article first appeared on Medscape.com.

The “twincretin” tirzepatide might become part of the “arsenal” against diabetic kidney disease, new research suggests. Notably, the drug significantly reduced the likelihood of macroalbuminuria, in a prespecified subanalysis of the SURPASS-4 clinical trial.

“Once-per-week tirzepatide compared to [daily] insulin glargine treatment resulted in a meaningful improvement in estimated glomerular filtration rate (eGFR) decline and reduced urine albumin-to-creatinine ratio (UACR) and the risk of end stage kidney disease (ESKD) – with low risk of clinically relevant hypoglycemia in participants with type 2 diabetes at high cardiovascular risk and varying degrees of chronic kidney disease (CKD),” lead investigator Hiddo J. L. Heerspink, PhD, PharmD, summarized in an email to this news organization.

The U.S. Food and Drug Administration has just approved tirzepatide (Mounjaro, Eli Lilly) – a novel, glucose-dependent insulinotropic polypeptide (GIP) combined with a glucagonlike peptide-1 (GLP-1) receptor agonist – to treat glycemia in patients with type 2 diabetes, based on five pivotal SURPASS trials.

Dr. Heerspink presented the new findings about tirzepatide’s impact on kidney function in an oral session at the annual scientific sessions of the American Diabetes Association.

40% reduced risk of kidney function decline

The main results of SURPASS-4 were published in the Lancet in October 2021, and showed that tirzepatide appeared superior to insulin glargine in lowering hemoglobin A1c in patients with type 2 diabetes at high cardiovascular risk who were inadequately controlled on oral diabetes treatments.

Now, Dr. Heerspink has shown that patients who received tirzepatide as opposed to insulin glargine were significantly less likely to have kidney function decline that included new-onset macroalbuminuria (hazard ratio, 0.59; P < .05).

“These are very large benefits and clearly indicate the potential of tirzepatide to be a very strong kidney protective drug,” said Dr. Heerspink, from the department of clinical pharmacy and pharmacology, University Medical Center Groningen (the Netherlands).

“Based on results from the SURPASS-4 trial, tirzepatide has significant kidney-protective effects in adults with type 2 diabetes with high cardiovascular risk and largely normal kidney function,” Christine Limonte, MD, chair of the session in which the analysis was presented, agreed, in an email to this news organization.

The approximate 40% reduced risk of kidney function decline in this population “is important because it suggests that this novel agent may contribute to the growing arsenal for preventing and treating diabetic kidney disease,” added Dr. Limonte, a clinical research fellow in the division of nephrology, University of Washington, Seattle.

“Over the last several years,” she noted, “sodium glucose cotransporter-2 [SGLT2] inhibitors and GLP-1 receptor agonists have been identified as having significant kidney-protective effects in type 2 diabetes, and as such are becoming first-line agents in the treatment of diabetic kidney disease.”

Additional studies are needed, she added, to assess the impacts of tirzepatide compared to these agents (particularly GLP-1 receptor agonists, which overlap in their mechanism of action).

“With the growing number of therapeutic options for diabetic kidney disease, future research should also focus on identifying combinations of agents which benefit individuals in a ‘targeted’ manner,” according to Dr. Limonte.

“Ensuring accessibility to kidney-protective agents by promoting access to health care and reducing drug costs is essential to improving outcomes in diabetic kidney disease,” she added.

Strongest reduction seen in risk of new macroalbuminuria

One in three adults with diabetes has CKD, according to a press release issued by the ADA. Therefore, there is a need for therapies to reduce the development and progression of CKD in patients with type 2 diabetes.

The prespecified analysis of SUPRESS-4 investigated potential renoprotective effects of tirzepatide.

The trial enrolled 1,995 patients with type 2 diabetes who were at increased risk of cardiovascular disease. The patients had a mean age of 63.6 years and a mean hemoglobin A1c of 8.5%.

Most patients had normal kidney function. The mean eGFR based on the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equation was 81.3 mL/min per 1.73 m².

Few patients (17%) had moderately or severely reduced kidney function (eGFR <60 mL/min per 1.73 m²). Around a quarter of the patients (28%) had microalbuminuria (UACR 30-300 mg/g) and 8% had macroalbuminuria (UACR >300 mg/g).

The patients were randomized to receive a weekly injection of 5, 10, or 15 mg tirzepatide or a daily individualized injection of insulin glargine starting at 10 IU/day at bedtime, titrated to a fasting blood glucose <100 mg/dL, in addition to existing oral glucose-lowering agents. The primary outcomes in the subanalysis were:

• Endpoint 1: a composite of ≥40% decline in eGFR from baseline, renal death, progression to ESKD, and new-onset macroalbuminuria.
• Endpoint 2: the same as endpoint 1 excluding new-onset macroalbuminuria.

During a median follow up of 85 weeks and up to 104 weeks, patients who received tirzepatide versus insulin glargine were significantly less likely to reach endpoint 1 but not endpoint 2.

In addition, tirzepatide “very strongly” reduced the risk of new-onset macroalbuminuria, compared to insulin glargine, by approximately 60% in the complete study cohort (hazard ratio, 0.41; P < .05), Dr. Limonte noted.

Tirzepatide also reduced the risk of a >40% decline in eGFR, but this effect was not statistically significant, possibly because this outcome was underpowered. There were also too few kidney deaths and progressions to ESKD to meaningfully assess the effects of tirzepatide on these outcomes.

Therefore, Dr. Limonte noted, “it is likely that tirzepatide’s significant benefit on composite endpoint 1 was largely driven by this agent’s impact on reducing macroalbuminuria onset [explaining why a significant benefit was not seen with composite endpoint 2, which excluded new-onset macroalbuminuria].”

The study was funded by Eli Lilly. Dr. Heerspink disclosed that he is a consultant for AstraZeneca, Bayer AG, Boehringer Ingelheim, Chinook Therapeutics, CSL Behring, Gilead Sciences, Goldfinch Bio, Janssen Research & Development, Mitsubishi Tanabe Pharma, Mundipharma, and Traveere Pharmaceuticals, and has received research support from AstraZeneca, Boehringer Ingelheim, and Novo Nordisk.

Dr. Limonte disclosed that she receives funds from the American Kidney Fund’s Clinical Scientist in Nephrology Award.

A version of this article first appeared on Medscape.com.

The “twincretin” tirzepatide might become part of the “arsenal” against diabetic kidney disease, new research suggests. Notably, the drug significantly reduced the likelihood of macroalbuminuria, in a prespecified subanalysis of the SURPASS-4 clinical trial.

“Once-per-week tirzepatide compared to [daily] insulin glargine treatment resulted in a meaningful improvement in estimated glomerular filtration rate (eGFR) decline and reduced urine albumin-to-creatinine ratio (UACR) and the risk of end stage kidney disease (ESKD) – with low risk of clinically relevant hypoglycemia in participants with type 2 diabetes at high cardiovascular risk and varying degrees of chronic kidney disease (CKD),” lead investigator Hiddo J. L. Heerspink, PhD, PharmD, summarized in an email to this news organization.

The U.S. Food and Drug Administration has just approved tirzepatide (Mounjaro, Eli Lilly) – a novel, glucose-dependent insulinotropic polypeptide (GIP) combined with a glucagonlike peptide-1 (GLP-1) receptor agonist – to treat glycemia in patients with type 2 diabetes, based on five pivotal SURPASS trials.

Dr. Heerspink presented the new findings about tirzepatide’s impact on kidney function in an oral session at the annual scientific sessions of the American Diabetes Association.

40% reduced risk of kidney function decline

The main results of SURPASS-4 were published in the Lancet in October 2021, and showed that tirzepatide appeared superior to insulin glargine in lowering hemoglobin A1c in patients with type 2 diabetes at high cardiovascular risk who were inadequately controlled on oral diabetes treatments.

Now, Dr. Heerspink has shown that patients who received tirzepatide as opposed to insulin glargine were significantly less likely to have kidney function decline that included new-onset macroalbuminuria (hazard ratio, 0.59; P < .05).

“These are very large benefits and clearly indicate the potential of tirzepatide to be a very strong kidney protective drug,” said Dr. Heerspink, from the department of clinical pharmacy and pharmacology, University Medical Center Groningen (the Netherlands).

“Based on results from the SURPASS-4 trial, tirzepatide has significant kidney-protective effects in adults with type 2 diabetes with high cardiovascular risk and largely normal kidney function,” Christine Limonte, MD, chair of the session in which the analysis was presented, agreed, in an email to this news organization.

The approximate 40% reduced risk of kidney function decline in this population “is important because it suggests that this novel agent may contribute to the growing arsenal for preventing and treating diabetic kidney disease,” added Dr. Limonte, a clinical research fellow in the division of nephrology, University of Washington, Seattle.

“Over the last several years,” she noted, “sodium glucose cotransporter-2 [SGLT2] inhibitors and GLP-1 receptor agonists have been identified as having significant kidney-protective effects in type 2 diabetes, and as such are becoming first-line agents in the treatment of diabetic kidney disease.”

Additional studies are needed, she added, to assess the impacts of tirzepatide compared to these agents (particularly GLP-1 receptor agonists, which overlap in their mechanism of action).

“With the growing number of therapeutic options for diabetic kidney disease, future research should also focus on identifying combinations of agents which benefit individuals in a ‘targeted’ manner,” according to Dr. Limonte.

“Ensuring accessibility to kidney-protective agents by promoting access to health care and reducing drug costs is essential to improving outcomes in diabetic kidney disease,” she added.

Strongest reduction seen in risk of new macroalbuminuria

One in three adults with diabetes has CKD, according to a press release issued by the ADA. Therefore, there is a need for therapies to reduce the development and progression of CKD in patients with type 2 diabetes.

The prespecified analysis of SUPRESS-4 investigated potential renoprotective effects of tirzepatide.

The trial enrolled 1,995 patients with type 2 diabetes who were at increased risk of cardiovascular disease. The patients had a mean age of 63.6 years and a mean hemoglobin A1c of 8.5%.

Most patients had normal kidney function. The mean eGFR based on the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equation was 81.3 mL/min per 1.73 m².

Few patients (17%) had moderately or severely reduced kidney function (eGFR <60 mL/min per 1.73 m²). Around a quarter of the patients (28%) had microalbuminuria (UACR 30-300 mg/g) and 8% had macroalbuminuria (UACR >300 mg/g).

The patients were randomized to receive a weekly injection of 5, 10, or 15 mg tirzepatide or a daily individualized injection of insulin glargine starting at 10 IU/day at bedtime, titrated to a fasting blood glucose <100 mg/dL, in addition to existing oral glucose-lowering agents. The primary outcomes in the subanalysis were:

• Endpoint 1: a composite of ≥40% decline in eGFR from baseline, renal death, progression to ESKD, and new-onset macroalbuminuria.
• Endpoint 2: the same as endpoint 1 excluding new-onset macroalbuminuria.

During a median follow up of 85 weeks and up to 104 weeks, patients who received tirzepatide versus insulin glargine were significantly less likely to reach endpoint 1 but not endpoint 2.

In addition, tirzepatide “very strongly” reduced the risk of new-onset macroalbuminuria, compared to insulin glargine, by approximately 60% in the complete study cohort (hazard ratio, 0.41; P < .05), Dr. Limonte noted.

Tirzepatide also reduced the risk of a >40% decline in eGFR, but this effect was not statistically significant, possibly because this outcome was underpowered. There were also too few kidney deaths and progressions to ESKD to meaningfully assess the effects of tirzepatide on these outcomes.

Therefore, Dr. Limonte noted, “it is likely that tirzepatide’s significant benefit on composite endpoint 1 was largely driven by this agent’s impact on reducing macroalbuminuria onset [explaining why a significant benefit was not seen with composite endpoint 2, which excluded new-onset macroalbuminuria].”

The study was funded by Eli Lilly. Dr. Heerspink disclosed that he is a consultant for AstraZeneca, Bayer AG, Boehringer Ingelheim, Chinook Therapeutics, CSL Behring, Gilead Sciences, Goldfinch Bio, Janssen Research & Development, Mitsubishi Tanabe Pharma, Mundipharma, and Traveere Pharmaceuticals, and has received research support from AstraZeneca, Boehringer Ingelheim, and Novo Nordisk.

Dr. Limonte disclosed that she receives funds from the American Kidney Fund’s Clinical Scientist in Nephrology Award.

A version of this article first appeared on Medscape.com.

All U.S. patients with diabetes should undergo annual biomarker testing to allow for early diagnosis of progressive but presymptomatic heart failure, and treatment with an agent from the sodium-glucose cotransporter 2 (SGLT2) inhibitor class should expand among such patients to include everyone with stage B heart failure (“pre–heart failure”) or more advanced stages.

That’s a recommendation from an American Diabetes Association consensus report published June 1 in Diabetes Care.

The report notes that until now, “implementation of available strategies to detect asymptomatic heart failure [in patients with diabetes] has been suboptimal.” The remedy for this is that, “among individuals with diabetes, measurement of a natriuretic peptide or high-sensitivity cardiac troponin is recommended on at least a yearly basis to identify the earliest heart failure stages and to implement strategies to prevent transition to symptomatic heart failure.”

Written by a 10-member panel, chaired by Rodica Pop-Busui, MD, PhD, and endorsed by the American College of Cardiology, the document also set threshold for levels of these biomarkers that are diagnostic for a more advanced stage (stage B) of heart failure in patients with diabetes but without heart failure symptoms:

• A B-type natriuretic peptide (BNP) level of ≥50 pg/mL;
• An N-terminal pro-BNP level of ≥125 pg/mL; or
• Any high sensitivity cardiac troponin value that’s above the usual upper reference limit set at >99th percentile.

‘Inexpensive’ biomarker testing

“Addition of relatively inexpensive biomarker testing as part of the standard of care may help to refine heart failure risk prediction in individuals with diabetes,” the report says.

“Substantial data indicate the ability of these biomarkers to identify those in stage A or B [heart failure] at highest risk of progressing to symptomatic heart failure or death,” and this identification is useful because “the risk in such individuals may be lowered through targeted intervention or multidisciplinary care.”

It is “impossible to understate the importance of early recognition of heart failure” in patients with heart failure, the authors declare. However, the report also cautions that, “using biomarkers to identify and in turn reduce risk for heart failure should always be done within the context of a thoughtful clinical evaluation, supported by all information available.”

The report, written during March 2021 – March 2022, cites the high prevalence and increasing incidence of heart failure in patients with diabetes as the rationale for the new recommendations.

For a person with diabetes who receives a heart failure diagnosis, the report details several management steps, starting with an evaluation for obstructive coronary artery disease, given the strong link between diabetes and atherosclerotic cardiovascular disease.

It highlights the importance of interventions that involve nutrition, smoking avoidance, minimized alcohol intake, exercise, weight loss, and relevant social determinants of health, but focuses in greater detail on a range of pharmacologic interventions. These include treatment of hypertension for people with early-stage heart failure with an ACE inhibitor or an angiotensin receptor blocker, a thiazide-type diuretic, and a mineralocorticoid receptor antagonist, such as spironolactone or the newer, nonsteroidal agent finerenone for patients with diabetic kidney disease.

Dr. Busui of the division of metabolism, endocrinology, and diabetes at the University of Michigan, Ann Arbor, and colleagues cite recent recommendations for using guidelines-directed medical therapy to treat patients with more advanced, symptomatic stages of heart failure, including heart failure with reduced or with preserved ejection fraction.

‘Prioritize’ the SGLT2-inhibitor class

The consensus report also summarizes the roles for agents in the various classes of antidiabetes drugs now available, with particular emphasis on the role for the SGLT2-inhibitor class.

SGLT2 inhibitors “are recommended for all individuals with [diabetes and] heart failure,” it says. “This consensus recommends prioritizing the use of SGLT2 inhibitors in individuals with stage B heart failure, and that SGLT2 inhibitors be an expected element of care in all individuals with diabetes and symptomatic heart failure.”

Other agents for glycemic control that receive endorsement from the report are those in the glucagonlike peptide 1 receptor agonist class. “Despite the lack of conclusive evidence of direct heart failure risk reduction” with this class, it gets a “should be considered” designation, based on its positive effects on weight loss, blood pressure, and atherothrombotic disease.

Similar acknowledgment of potential benefit in a “should be considered” role goes to metformin. But the report turned a thumb down for both the class of dipeptidyl peptidase 4 inhibitors and the thiazolidinedione class, and said that agents from the insulin and sulfonylurea classes should be used “judiciously.”

The report did not identify any commercial funding. Several of the writing committee members listed personal commercial disclosures.

All U.S. patients with diabetes should undergo annual biomarker testing to allow for early diagnosis of progressive but presymptomatic heart failure, and treatment with an agent from the sodium-glucose cotransporter 2 (SGLT2) inhibitor class should expand among such patients to include everyone with stage B heart failure (“pre–heart failure”) or more advanced stages.

That’s a recommendation from an American Diabetes Association consensus report published June 1 in Diabetes Care.

The report notes that until now, “implementation of available strategies to detect asymptomatic heart failure [in patients with diabetes] has been suboptimal.” The remedy for this is that, “among individuals with diabetes, measurement of a natriuretic peptide or high-sensitivity cardiac troponin is recommended on at least a yearly basis to identify the earliest heart failure stages and to implement strategies to prevent transition to symptomatic heart failure.”

Written by a 10-member panel, chaired by Rodica Pop-Busui, MD, PhD, and endorsed by the American College of Cardiology, the document also set threshold for levels of these biomarkers that are diagnostic for a more advanced stage (stage B) of heart failure in patients with diabetes but without heart failure symptoms:

• A B-type natriuretic peptide (BNP) level of ≥50 pg/mL;
• An N-terminal pro-BNP level of ≥125 pg/mL; or
• Any high sensitivity cardiac troponin value that’s above the usual upper reference limit set at >99th percentile.

‘Inexpensive’ biomarker testing

“Addition of relatively inexpensive biomarker testing as part of the standard of care may help to refine heart failure risk prediction in individuals with diabetes,” the report says.

“Substantial data indicate the ability of these biomarkers to identify those in stage A or B [heart failure] at highest risk of progressing to symptomatic heart failure or death,” and this identification is useful because “the risk in such individuals may be lowered through targeted intervention or multidisciplinary care.”

It is “impossible to understate the importance of early recognition of heart failure” in patients with heart failure, the authors declare. However, the report also cautions that, “using biomarkers to identify and in turn reduce risk for heart failure should always be done within the context of a thoughtful clinical evaluation, supported by all information available.”

The report, written during March 2021 – March 2022, cites the high prevalence and increasing incidence of heart failure in patients with diabetes as the rationale for the new recommendations.

For a person with diabetes who receives a heart failure diagnosis, the report details several management steps, starting with an evaluation for obstructive coronary artery disease, given the strong link between diabetes and atherosclerotic cardiovascular disease.

It highlights the importance of interventions that involve nutrition, smoking avoidance, minimized alcohol intake, exercise, weight loss, and relevant social determinants of health, but focuses in greater detail on a range of pharmacologic interventions. These include treatment of hypertension for people with early-stage heart failure with an ACE inhibitor or an angiotensin receptor blocker, a thiazide-type diuretic, and a mineralocorticoid receptor antagonist, such as spironolactone or the newer, nonsteroidal agent finerenone for patients with diabetic kidney disease.

Dr. Busui of the division of metabolism, endocrinology, and diabetes at the University of Michigan, Ann Arbor, and colleagues cite recent recommendations for using guidelines-directed medical therapy to treat patients with more advanced, symptomatic stages of heart failure, including heart failure with reduced or with preserved ejection fraction.

‘Prioritize’ the SGLT2-inhibitor class

The consensus report also summarizes the roles for agents in the various classes of antidiabetes drugs now available, with particular emphasis on the role for the SGLT2-inhibitor class.

SGLT2 inhibitors “are recommended for all individuals with [diabetes and] heart failure,” it says. “This consensus recommends prioritizing the use of SGLT2 inhibitors in individuals with stage B heart failure, and that SGLT2 inhibitors be an expected element of care in all individuals with diabetes and symptomatic heart failure.”

Other agents for glycemic control that receive endorsement from the report are those in the glucagonlike peptide 1 receptor agonist class. “Despite the lack of conclusive evidence of direct heart failure risk reduction” with this class, it gets a “should be considered” designation, based on its positive effects on weight loss, blood pressure, and atherothrombotic disease.

Similar acknowledgment of potential benefit in a “should be considered” role goes to metformin. But the report turned a thumb down for both the class of dipeptidyl peptidase 4 inhibitors and the thiazolidinedione class, and said that agents from the insulin and sulfonylurea classes should be used “judiciously.”

The report did not identify any commercial funding. Several of the writing committee members listed personal commercial disclosures.

All U.S. patients with diabetes should undergo annual biomarker testing to allow for early diagnosis of progressive but presymptomatic heart failure, and treatment with an agent from the sodium-glucose cotransporter 2 (SGLT2) inhibitor class should expand among such patients to include everyone with stage B heart failure (“pre–heart failure”) or more advanced stages.

That’s a recommendation from an American Diabetes Association consensus report published June 1 in Diabetes Care.

The report notes that until now, “implementation of available strategies to detect asymptomatic heart failure [in patients with diabetes] has been suboptimal.” The remedy for this is that, “among individuals with diabetes, measurement of a natriuretic peptide or high-sensitivity cardiac troponin is recommended on at least a yearly basis to identify the earliest heart failure stages and to implement strategies to prevent transition to symptomatic heart failure.”

Written by a 10-member panel, chaired by Rodica Pop-Busui, MD, PhD, and endorsed by the American College of Cardiology, the document also set threshold for levels of these biomarkers that are diagnostic for a more advanced stage (stage B) of heart failure in patients with diabetes but without heart failure symptoms:

• A B-type natriuretic peptide (BNP) level of ≥50 pg/mL;
• An N-terminal pro-BNP level of ≥125 pg/mL; or
• Any high sensitivity cardiac troponin value that’s above the usual upper reference limit set at >99th percentile.

‘Inexpensive’ biomarker testing

“Addition of relatively inexpensive biomarker testing as part of the standard of care may help to refine heart failure risk prediction in individuals with diabetes,” the report says.

“Substantial data indicate the ability of these biomarkers to identify those in stage A or B [heart failure] at highest risk of progressing to symptomatic heart failure or death,” and this identification is useful because “the risk in such individuals may be lowered through targeted intervention or multidisciplinary care.”

It is “impossible to understate the importance of early recognition of heart failure” in patients with heart failure, the authors declare. However, the report also cautions that, “using biomarkers to identify and in turn reduce risk for heart failure should always be done within the context of a thoughtful clinical evaluation, supported by all information available.”

The report, written during March 2021 – March 2022, cites the high prevalence and increasing incidence of heart failure in patients with diabetes as the rationale for the new recommendations.

For a person with diabetes who receives a heart failure diagnosis, the report details several management steps, starting with an evaluation for obstructive coronary artery disease, given the strong link between diabetes and atherosclerotic cardiovascular disease.

It highlights the importance of interventions that involve nutrition, smoking avoidance, minimized alcohol intake, exercise, weight loss, and relevant social determinants of health, but focuses in greater detail on a range of pharmacologic interventions. These include treatment of hypertension for people with early-stage heart failure with an ACE inhibitor or an angiotensin receptor blocker, a thiazide-type diuretic, and a mineralocorticoid receptor antagonist, such as spironolactone or the newer, nonsteroidal agent finerenone for patients with diabetic kidney disease.

Dr. Busui of the division of metabolism, endocrinology, and diabetes at the University of Michigan, Ann Arbor, and colleagues cite recent recommendations for using guidelines-directed medical therapy to treat patients with more advanced, symptomatic stages of heart failure, including heart failure with reduced or with preserved ejection fraction.

‘Prioritize’ the SGLT2-inhibitor class

The consensus report also summarizes the roles for agents in the various classes of antidiabetes drugs now available, with particular emphasis on the role for the SGLT2-inhibitor class.

SGLT2 inhibitors “are recommended for all individuals with [diabetes and] heart failure,” it says. “This consensus recommends prioritizing the use of SGLT2 inhibitors in individuals with stage B heart failure, and that SGLT2 inhibitors be an expected element of care in all individuals with diabetes and symptomatic heart failure.”

Other agents for glycemic control that receive endorsement from the report are those in the glucagonlike peptide 1 receptor agonist class. “Despite the lack of conclusive evidence of direct heart failure risk reduction” with this class, it gets a “should be considered” designation, based on its positive effects on weight loss, blood pressure, and atherothrombotic disease.

Similar acknowledgment of potential benefit in a “should be considered” role goes to metformin. But the report turned a thumb down for both the class of dipeptidyl peptidase 4 inhibitors and the thiazolidinedione class, and said that agents from the insulin and sulfonylurea classes should be used “judiciously.”

The report did not identify any commercial funding. Several of the writing committee members listed personal commercial disclosures.

The first international survey of parental benefits and policies among cardiovascular training programs shows wide variability among institutions.

Although a majority of cardiology fellows became parents during training, the survey found that family benefits and policies were not uniformly available and that knowledge about the existence of such policies was low across all institutions.

The findings are published in the Journal of the American College of Cardiology.

Such variability highlights disparities in real-world experiences, say Estefania Oliveros, MD, Temple University Hospital, Philadelphia, and colleagues.

“There are no policies to protect cardiology trainees when they become parents that are uniform across the United States or even internationally, even though, according to our survey, 61.7% become parents during training,” Dr. Oliveros told this news organization.

Dr. Oliveros said she wanted to learn more about the status of institutional practices surrounding pregnant trainees during cardiovascular fellowship, not only in the U.S., but internationally: “I wanted to study this because of my own experience.”

“I was probably the first pregnant trainee at my institution, and there were no specific policies in place, so I had to find out on my own what to do about radiation safety, where I would breastfeed, schedule changes, how that would impact my graduation time, things like that,” Dr. Oliveros said. “It would be nice if you had the resources and your institution could accommodate your needs, instead of every time you have a pregnant person on your staff, you have to reinvent the wheel.”

Dr. Oliveros and colleagues conducted an online survey during August 2020-October 2020 that was distributed via social media. Responses were made anonymous to encourage unbiased feedback.

Among the 417 completed responses, 47 (11.3%) were from training program directors, 146 (35%) from current or former pregnant trainees, and 224 (53.7%) from current or former trainees who were not pregnant during cardiology training. Two-thirds of the respondents (67.1%) were parents.

Most survey respondents said they became pregnant during the third year of general cardiology (29.1%), followed by the first year of general cardiology (26.3%), and the second year of general cardiology (23.5%).

Only 13 of the 47 training program directors (27.7%) received guidance or training on how to accommodate pregnant trainees during fellowship.

Additionally, 26% of the trainees reported their institution had readily available breastfeeding and pumping policies, 39% responded that their institution had no such policies, and 34.9% said they did not know.

Nearly one-half of the programs offered rearrangement of schedules because of radiation concerns, 27.5% did not.

The amount of parental leave varied greatly worldwide. For Europe, Central and South America, Africa, and Australia, the average parental leave was more than 4 months; for Canada, it was more than 3 months; for the United States, it was 1 to 2 months; and for Asia, it was 3 to 4 weeks.

“There is no uniformity, no policies for things like breastfeeding or places where you can pump. None of that is installed, even though by law we’re supposed to have these things,” Dr. Oliveros said.

In all countries, paternity leave was uncommon (2.6% of respondents), even though 48.5% of the programs had paternity leave.

“I would like to see associations, program directors, even trainees helping each other in finding ways to accommodate parents to promote wellness and assure that trainees can have both good training and life balance,” she added.

In an accompanying editorial, Ileana L. Piña, MD, MPH, Thomas Jefferson Institute, Philadelphia, writes: “Enough has been said about our need for a greater percentage of women cardiologists. There is no need to further debate that fact. However, it is puzzling that despite > 50% of medical students being women, the cardiology specialty is fraught with recent survey reports of hostility in the workplace, concerns of long hours, exposure to radiation, and poor work-life balance that can compel trainees to choose delaying pregnancy or taking unpaid leave, which will, in turn, delay training. Therefore, it is not surprising that only 14.9% of cardiologist specialists and 21.9% of cardiology fellows are women.”

Dr. Piña notes that while the authors understand that it’s difficult to change national policies, they issue a “call to action” for organizations and program directors to demonstrate leadership by developing fair and balanced decisions regarding parental policies.

“Those decisions are so impactful that they can change career trajectories for the better or worse ... the current status is unacceptable and must change for the benefit of all trainees, their families, and the program directors. The problem is too important and pervasive,” she adds.

Dr. Piña concludes: “Perhaps if the women who are the subjects of, and often the unwitting party to, administrative decisions about their lives, choices, and welfare were invited to contribute to the changes, we would finally see an increase in the number of women in cardiology careers. After all, aren’t we about diversity and belonging?”

“We need to normalize pregnancy and parental leave across the globe,” Laxmi S. Mehta, MD, Ohio State University Weiner Medical Center, Columbus, said in an interview.

As previously reported, Dr. Mehta recently led a study that surveyed 323 women cardiologists who were working while they were pregnant. Her study found that 75% of these women experienced discriminatory maternity leave practices, some of which were likely violations of the federal Family and Medical Leave Act.

“If we want more women to pursue a career in cardiology, then employers and health systems need to adequately support parenthood, including allowing people to spend uninterrupted time with their newborns without the fear of discrimination, retaliation, or financial burden,” Dr. Mehta said.

Limitations of the study are the small sample size, potential for bias associated with social media distribution, and the fact that 75% of respondents were women, Dr. Oliveros and colleagues write.

Dr. Oliveros, Dr. Piña, and Dr. Mehta report no relevant financial relationships.

A version of this article first appeared on Medscape.com.

The first international survey of parental benefits and policies among cardiovascular training programs shows wide variability among institutions.

Although a majority of cardiology fellows became parents during training, the survey found that family benefits and policies were not uniformly available and that knowledge about the existence of such policies was low across all institutions.

The findings are published in the Journal of the American College of Cardiology.

Such variability highlights disparities in real-world experiences, say Estefania Oliveros, MD, Temple University Hospital, Philadelphia, and colleagues.

“There are no policies to protect cardiology trainees when they become parents that are uniform across the United States or even internationally, even though, according to our survey, 61.7% become parents during training,” Dr. Oliveros told this news organization.

Dr. Oliveros said she wanted to learn more about the status of institutional practices surrounding pregnant trainees during cardiovascular fellowship, not only in the U.S., but internationally: “I wanted to study this because of my own experience.”

“I was probably the first pregnant trainee at my institution, and there were no specific policies in place, so I had to find out on my own what to do about radiation safety, where I would breastfeed, schedule changes, how that would impact my graduation time, things like that,” Dr. Oliveros said. “It would be nice if you had the resources and your institution could accommodate your needs, instead of every time you have a pregnant person on your staff, you have to reinvent the wheel.”

Dr. Oliveros and colleagues conducted an online survey during August 2020-October 2020 that was distributed via social media. Responses were made anonymous to encourage unbiased feedback.

Among the 417 completed responses, 47 (11.3%) were from training program directors, 146 (35%) from current or former pregnant trainees, and 224 (53.7%) from current or former trainees who were not pregnant during cardiology training. Two-thirds of the respondents (67.1%) were parents.

Most survey respondents said they became pregnant during the third year of general cardiology (29.1%), followed by the first year of general cardiology (26.3%), and the second year of general cardiology (23.5%).

Only 13 of the 47 training program directors (27.7%) received guidance or training on how to accommodate pregnant trainees during fellowship.

Additionally, 26% of the trainees reported their institution had readily available breastfeeding and pumping policies, 39% responded that their institution had no such policies, and 34.9% said they did not know.

Nearly one-half of the programs offered rearrangement of schedules because of radiation concerns, 27.5% did not.

The amount of parental leave varied greatly worldwide. For Europe, Central and South America, Africa, and Australia, the average parental leave was more than 4 months; for Canada, it was more than 3 months; for the United States, it was 1 to 2 months; and for Asia, it was 3 to 4 weeks.

“There is no uniformity, no policies for things like breastfeeding or places where you can pump. None of that is installed, even though by law we’re supposed to have these things,” Dr. Oliveros said.

In all countries, paternity leave was uncommon (2.6% of respondents), even though 48.5% of the programs had paternity leave.

“I would like to see associations, program directors, even trainees helping each other in finding ways to accommodate parents to promote wellness and assure that trainees can have both good training and life balance,” she added.

In an accompanying editorial, Ileana L. Piña, MD, MPH, Thomas Jefferson Institute, Philadelphia, writes: “Enough has been said about our need for a greater percentage of women cardiologists. There is no need to further debate that fact. However, it is puzzling that despite > 50% of medical students being women, the cardiology specialty is fraught with recent survey reports of hostility in the workplace, concerns of long hours, exposure to radiation, and poor work-life balance that can compel trainees to choose delaying pregnancy or taking unpaid leave, which will, in turn, delay training. Therefore, it is not surprising that only 14.9% of cardiologist specialists and 21.9% of cardiology fellows are women.”

Dr. Piña notes that while the authors understand that it’s difficult to change national policies, they issue a “call to action” for organizations and program directors to demonstrate leadership by developing fair and balanced decisions regarding parental policies.

“Those decisions are so impactful that they can change career trajectories for the better or worse ... the current status is unacceptable and must change for the benefit of all trainees, their families, and the program directors. The problem is too important and pervasive,” she adds.

Dr. Piña concludes: “Perhaps if the women who are the subjects of, and often the unwitting party to, administrative decisions about their lives, choices, and welfare were invited to contribute to the changes, we would finally see an increase in the number of women in cardiology careers. After all, aren’t we about diversity and belonging?”

“We need to normalize pregnancy and parental leave across the globe,” Laxmi S. Mehta, MD, Ohio State University Weiner Medical Center, Columbus, said in an interview.

As previously reported, Dr. Mehta recently led a study that surveyed 323 women cardiologists who were working while they were pregnant. Her study found that 75% of these women experienced discriminatory maternity leave practices, some of which were likely violations of the federal Family and Medical Leave Act.

“If we want more women to pursue a career in cardiology, then employers and health systems need to adequately support parenthood, including allowing people to spend uninterrupted time with their newborns without the fear of discrimination, retaliation, or financial burden,” Dr. Mehta said.

Limitations of the study are the small sample size, potential for bias associated with social media distribution, and the fact that 75% of respondents were women, Dr. Oliveros and colleagues write.

Dr. Oliveros, Dr. Piña, and Dr. Mehta report no relevant financial relationships.

A version of this article first appeared on Medscape.com.

The first international survey of parental benefits and policies among cardiovascular training programs shows wide variability among institutions.

Although a majority of cardiology fellows became parents during training, the survey found that family benefits and policies were not uniformly available and that knowledge about the existence of such policies was low across all institutions.

The findings are published in the Journal of the American College of Cardiology.

Such variability highlights disparities in real-world experiences, say Estefania Oliveros, MD, Temple University Hospital, Philadelphia, and colleagues.

“There are no policies to protect cardiology trainees when they become parents that are uniform across the United States or even internationally, even though, according to our survey, 61.7% become parents during training,” Dr. Oliveros told this news organization.

Dr. Oliveros said she wanted to learn more about the status of institutional practices surrounding pregnant trainees during cardiovascular fellowship, not only in the U.S., but internationally: “I wanted to study this because of my own experience.”

“I was probably the first pregnant trainee at my institution, and there were no specific policies in place, so I had to find out on my own what to do about radiation safety, where I would breastfeed, schedule changes, how that would impact my graduation time, things like that,” Dr. Oliveros said. “It would be nice if you had the resources and your institution could accommodate your needs, instead of every time you have a pregnant person on your staff, you have to reinvent the wheel.”

Dr. Oliveros and colleagues conducted an online survey during August 2020-October 2020 that was distributed via social media. Responses were made anonymous to encourage unbiased feedback.

Among the 417 completed responses, 47 (11.3%) were from training program directors, 146 (35%) from current or former pregnant trainees, and 224 (53.7%) from current or former trainees who were not pregnant during cardiology training. Two-thirds of the respondents (67.1%) were parents.

Most survey respondents said they became pregnant during the third year of general cardiology (29.1%), followed by the first year of general cardiology (26.3%), and the second year of general cardiology (23.5%).

Only 13 of the 47 training program directors (27.7%) received guidance or training on how to accommodate pregnant trainees during fellowship.

Additionally, 26% of the trainees reported their institution had readily available breastfeeding and pumping policies, 39% responded that their institution had no such policies, and 34.9% said they did not know.

Nearly one-half of the programs offered rearrangement of schedules because of radiation concerns, 27.5% did not.

The amount of parental leave varied greatly worldwide. For Europe, Central and South America, Africa, and Australia, the average parental leave was more than 4 months; for Canada, it was more than 3 months; for the United States, it was 1 to 2 months; and for Asia, it was 3 to 4 weeks.

“There is no uniformity, no policies for things like breastfeeding or places where you can pump. None of that is installed, even though by law we’re supposed to have these things,” Dr. Oliveros said.

In all countries, paternity leave was uncommon (2.6% of respondents), even though 48.5% of the programs had paternity leave.

“I would like to see associations, program directors, even trainees helping each other in finding ways to accommodate parents to promote wellness and assure that trainees can have both good training and life balance,” she added.

In an accompanying editorial, Ileana L. Piña, MD, MPH, Thomas Jefferson Institute, Philadelphia, writes: “Enough has been said about our need for a greater percentage of women cardiologists. There is no need to further debate that fact. However, it is puzzling that despite > 50% of medical students being women, the cardiology specialty is fraught with recent survey reports of hostility in the workplace, concerns of long hours, exposure to radiation, and poor work-life balance that can compel trainees to choose delaying pregnancy or taking unpaid leave, which will, in turn, delay training. Therefore, it is not surprising that only 14.9% of cardiologist specialists and 21.9% of cardiology fellows are women.”

Dr. Piña notes that while the authors understand that it’s difficult to change national policies, they issue a “call to action” for organizations and program directors to demonstrate leadership by developing fair and balanced decisions regarding parental policies.

“Those decisions are so impactful that they can change career trajectories for the better or worse ... the current status is unacceptable and must change for the benefit of all trainees, their families, and the program directors. The problem is too important and pervasive,” she adds.

Dr. Piña concludes: “Perhaps if the women who are the subjects of, and often the unwitting party to, administrative decisions about their lives, choices, and welfare were invited to contribute to the changes, we would finally see an increase in the number of women in cardiology careers. After all, aren’t we about diversity and belonging?”

“We need to normalize pregnancy and parental leave across the globe,” Laxmi S. Mehta, MD, Ohio State University Weiner Medical Center, Columbus, said in an interview.

As previously reported, Dr. Mehta recently led a study that surveyed 323 women cardiologists who were working while they were pregnant. Her study found that 75% of these women experienced discriminatory maternity leave practices, some of which were likely violations of the federal Family and Medical Leave Act.

“If we want more women to pursue a career in cardiology, then employers and health systems need to adequately support parenthood, including allowing people to spend uninterrupted time with their newborns without the fear of discrimination, retaliation, or financial burden,” Dr. Mehta said.

Limitations of the study are the small sample size, potential for bias associated with social media distribution, and the fact that 75% of respondents were women, Dr. Oliveros and colleagues write.

Dr. Oliveros, Dr. Piña, and Dr. Mehta report no relevant financial relationships.

A version of this article first appeared on Medscape.com.

A small group of patients with heart failure (HF) who underwent a novel transcatheter nerve-ablation procedure seemed to benefit with improved hemodynamics, symptoms, and quality of life in an admittedly limited observational series.

All had HF with preserved ejection fraction (HFpEF) and remained on guideline-directed medical therapy during the study.

The open-label experience has launched a randomized trial, featuring a sham control group, that could ultimately challenge dogma about volume overload in patients with chronic and acute HF and the perceived essential role of diuretics.

Researchers see transvenous ablation of the right greater splanchnic nerve (GSN) as potentially appropriate for patients with HF, regardless of ventricular function or acuity. But the ongoing REBALANCE-HF trial aims to enroll up to 80 patients with chronic HFpEF.

Meanwhile, the current 18 patients with elevated resting or exertional pulmonary capillary wedge pressure (PCWP), given the procedure as part of the main trial’s “roll-in” phase, showed declines in exercise PCWP after 1 month (P = .007) and improved quality-of-life scores at both 1 and 3 months (P < .01). Also at 1 month, a third of the patients improved by at least one step in NYHA functional class.

The procedure, called splanchnic ablation for volume management (SAVM), could potentially be used “across the spectrum of acute and chronic heart failure, maybe even with reduced ejection fraction (HFrEF) and preserved ejection fraction,” Marat Fudim, MD, MHS, Duke University Medical Center, Durham, N.C., told this news organization.

However, “for outcomes, we’ve really only looked in the ambulatory setting,” and only at symptomatic and functional responses. To that extent, based on the current experience and a few small previous studies, Dr. Fudim said, SAVM seems to benefit patients with HF in general who have dyspnea at exercise. Beyond that, the kind of patient who may be most suitable for it “is something I hope we will be able answer once the randomized dataset is in.”

Dr. Fudim reported the REBALANCE-HF roll-in results at the Heart Failure Association of the European Society of Cardiology (HFA-ESC) 2022 sessions, held virtually and live in Madrid. He is also lead author on the same-day publication in the European Journal of Heart Failure.

A different treatment paradigm

Splanchnic-nerve blockade as a possible HF treatment is based on growing evidence that volume overload in patients with HF is not always the cause, at least not a main cause, of congestion and dyspnea. Rather, those classic HF signs and symptoms may often be triggered by adverse redistribution of stable fluid volume from primarily the splanchnic vascular compartment to the intrathoracic space.

In other words, what might seem like classic volume overload calling for diuresis often might actually be euvolemic redistribution of fluid from the abdomen to the chest, raising intracardiac pressures and causing dyspnea.

In that scenario, loop diuretics might only dehydrate the patient and potentially put the kidneys at risk, Dr. Fudim proposed. His recent experience with HF patients implanted with a pulmonary-artery pressure monitor, he said, suggests many who received standard volume-overload therapy had actually been normo- or hypovolemic.

More then half the patients “did not have high volume, they just had high pressures,” he said. “So there is a significant portion of the population that has pathological processes leading to high pressures, but it’s not volume overload. Diuresing those patients would probably not be the right decision.”

The unilateral SAVM procedure appears to attenuate sympathetically mediated splanchnic volume redistribution to the heart and lungs, but as it doesn’t affect the left GSN, preserves some normal sympathetic response.

Sometimes in studies of surgical or catheter-based SAVM, Dr. Fudim said, “we have observationally seen that people discontinued diuretics or decreased doses in the treatment arm.”
 

‘Beyond our classical thinking’

It’s “impressive” that such right-GSN ablation seemed to reduce exercise-filling pressures, but one should be circumspect because “it’s way beyond our classical thinking,” Wilfried Mullens, MD, PhD, Hospital Oost-Limburg, Genk, Belgium, said as a panelist after Dr. Fudim’s presentation.

“These are invasive procedures,” he noted, “and our physiological understanding does not always match up with what we’re doing in real life, if you look at other interventional procedures, like renal denervation, which showed neutral effects, or if you look at even interatrial shunt devices, which might even be dangerous.”

The field should be “very prudent” before using SAVM in practice, which shouldn’t be “before we have sufficient data to support the efficacy and safety,” Dr. Mullens said. “It remains to be seen how treatment success will be defined. Is it during exercise? How long does the treatment last? What is the effect of the treatment over time; is it not harmful? These are things that we don’t know yet.”

The procedure was considered successful in all 18 patients, 14 of whom were women and 16 of whom were in NYHA class 3. Their average age was 75, and their mean left ventricular ejection fraction (LVEF) at baseline was 61%. The primary efficacy endpoints were a reduction in PCWP at rest, with legs raised, and at 20W exercise at 1 month. Their baseline invasively measured peak exercise PCWP was at least 25 mm Hg.

At 1 month, mean PCWP at 20W exercise fell from 36.4 mm Hg to 28.9 mm Hg (P = .007) and peak PCWP declined from 39.5 mm Hg to 31.9 mm Hg (P = .013); resting PCWP wasn’t significantly affected. Twelve patients improved by at least one NYHA functional class (P = .02).

Scores on the Kansas City Cardiomyopathy Questionnaire (KCCQ), which assesses quality of life, improved by 22 points at 1 month and 18.3 points at 3 months (P < .01 for both differences).

No significant effects on 6-minute walk distance or natriuretic peptide levels were observed, nor were any observed on LVEF or echocardiographic measures of diastolic function, left ventricular (LV) atrial volume, or LV mass at 3 months.

Three “nonserious” device-related adverse events were observed, including one case of acute decompensation early in the experience, ostensibly due to excessive saline administration, Dr. Fudim reported. There was also one case of transient periprocedural hypertension and one instance of postprocedure back pain.

The SAVM procedure is performed transvenously and in general is technically “really not that challenging,” Dr. Fudim said. In most cases, the necessary skills would be accessible not only to interventional cardiologists but also heart failure specialists. “I have performed this procedure myself, and I’m a heart failure guy.”

The REBALANCE-HF roll-in phase and main trial are supported by Axon Therapies. Dr. Fudim discloses receiving support from Bayer, Bodyport, and BTG Specialty Pharmaceuticals; and consulting fees from Abbott, Audicor, Axon Therapies, Bodyguide, Bodyport, Boston Scientific, CVRx, Daxor, Edwards LifeSciences, Feldschuh Foundation, Fire1, Gradient, Intershunt, NXT Biomedical, Pharmacosmos, PreHealth, Splendo, Vironix, Viscardia, and Zoll. Dr. Mullens discloses receiving fees for speaking from Medtronic, Abbott, Novartis, Boston Scientific, AstraZeneca, and Boehringer Ingelheim.

A version of this article first appeared on Medscape.com.

A small group of patients with heart failure (HF) who underwent a novel transcatheter nerve-ablation procedure seemed to benefit with improved hemodynamics, symptoms, and quality of life in an admittedly limited observational series.

All had HF with preserved ejection fraction (HFpEF) and remained on guideline-directed medical therapy during the study.

The open-label experience has launched a randomized trial, featuring a sham control group, that could ultimately challenge dogma about volume overload in patients with chronic and acute HF and the perceived essential role of diuretics.

Researchers see transvenous ablation of the right greater splanchnic nerve (GSN) as potentially appropriate for patients with HF, regardless of ventricular function or acuity. But the ongoing REBALANCE-HF trial aims to enroll up to 80 patients with chronic HFpEF.

Meanwhile, the current 18 patients with elevated resting or exertional pulmonary capillary wedge pressure (PCWP), given the procedure as part of the main trial’s “roll-in” phase, showed declines in exercise PCWP after 1 month (P = .007) and improved quality-of-life scores at both 1 and 3 months (P < .01). Also at 1 month, a third of the patients improved by at least one step in NYHA functional class.

The procedure, called splanchnic ablation for volume management (SAVM), could potentially be used “across the spectrum of acute and chronic heart failure, maybe even with reduced ejection fraction (HFrEF) and preserved ejection fraction,” Marat Fudim, MD, MHS, Duke University Medical Center, Durham, N.C., told this news organization.

However, “for outcomes, we’ve really only looked in the ambulatory setting,” and only at symptomatic and functional responses. To that extent, based on the current experience and a few small previous studies, Dr. Fudim said, SAVM seems to benefit patients with HF in general who have dyspnea at exercise. Beyond that, the kind of patient who may be most suitable for it “is something I hope we will be able answer once the randomized dataset is in.”

Dr. Fudim reported the REBALANCE-HF roll-in results at the Heart Failure Association of the European Society of Cardiology (HFA-ESC) 2022 sessions, held virtually and live in Madrid. He is also lead author on the same-day publication in the European Journal of Heart Failure.

A different treatment paradigm

Splanchnic-nerve blockade as a possible HF treatment is based on growing evidence that volume overload in patients with HF is not always the cause, at least not a main cause, of congestion and dyspnea. Rather, those classic HF signs and symptoms may often be triggered by adverse redistribution of stable fluid volume from primarily the splanchnic vascular compartment to the intrathoracic space.

In other words, what might seem like classic volume overload calling for diuresis often might actually be euvolemic redistribution of fluid from the abdomen to the chest, raising intracardiac pressures and causing dyspnea.

In that scenario, loop diuretics might only dehydrate the patient and potentially put the kidneys at risk, Dr. Fudim proposed. His recent experience with HF patients implanted with a pulmonary-artery pressure monitor, he said, suggests many who received standard volume-overload therapy had actually been normo- or hypovolemic.

More then half the patients “did not have high volume, they just had high pressures,” he said. “So there is a significant portion of the population that has pathological processes leading to high pressures, but it’s not volume overload. Diuresing those patients would probably not be the right decision.”

The unilateral SAVM procedure appears to attenuate sympathetically mediated splanchnic volume redistribution to the heart and lungs, but as it doesn’t affect the left GSN, preserves some normal sympathetic response.

Sometimes in studies of surgical or catheter-based SAVM, Dr. Fudim said, “we have observationally seen that people discontinued diuretics or decreased doses in the treatment arm.”
 

‘Beyond our classical thinking’

It’s “impressive” that such right-GSN ablation seemed to reduce exercise-filling pressures, but one should be circumspect because “it’s way beyond our classical thinking,” Wilfried Mullens, MD, PhD, Hospital Oost-Limburg, Genk, Belgium, said as a panelist after Dr. Fudim’s presentation.

“These are invasive procedures,” he noted, “and our physiological understanding does not always match up with what we’re doing in real life, if you look at other interventional procedures, like renal denervation, which showed neutral effects, or if you look at even interatrial shunt devices, which might even be dangerous.”

The field should be “very prudent” before using SAVM in practice, which shouldn’t be “before we have sufficient data to support the efficacy and safety,” Dr. Mullens said. “It remains to be seen how treatment success will be defined. Is it during exercise? How long does the treatment last? What is the effect of the treatment over time; is it not harmful? These are things that we don’t know yet.”

The procedure was considered successful in all 18 patients, 14 of whom were women and 16 of whom were in NYHA class 3. Their average age was 75, and their mean left ventricular ejection fraction (LVEF) at baseline was 61%. The primary efficacy endpoints were a reduction in PCWP at rest, with legs raised, and at 20W exercise at 1 month. Their baseline invasively measured peak exercise PCWP was at least 25 mm Hg.

At 1 month, mean PCWP at 20W exercise fell from 36.4 mm Hg to 28.9 mm Hg (P = .007) and peak PCWP declined from 39.5 mm Hg to 31.9 mm Hg (P = .013); resting PCWP wasn’t significantly affected. Twelve patients improved by at least one NYHA functional class (P = .02).

Scores on the Kansas City Cardiomyopathy Questionnaire (KCCQ), which assesses quality of life, improved by 22 points at 1 month and 18.3 points at 3 months (P < .01 for both differences).

No significant effects on 6-minute walk distance or natriuretic peptide levels were observed, nor were any observed on LVEF or echocardiographic measures of diastolic function, left ventricular (LV) atrial volume, or LV mass at 3 months.

Three “nonserious” device-related adverse events were observed, including one case of acute decompensation early in the experience, ostensibly due to excessive saline administration, Dr. Fudim reported. There was also one case of transient periprocedural hypertension and one instance of postprocedure back pain.

The SAVM procedure is performed transvenously and in general is technically “really not that challenging,” Dr. Fudim said. In most cases, the necessary skills would be accessible not only to interventional cardiologists but also heart failure specialists. “I have performed this procedure myself, and I’m a heart failure guy.”

The REBALANCE-HF roll-in phase and main trial are supported by Axon Therapies. Dr. Fudim discloses receiving support from Bayer, Bodyport, and BTG Specialty Pharmaceuticals; and consulting fees from Abbott, Audicor, Axon Therapies, Bodyguide, Bodyport, Boston Scientific, CVRx, Daxor, Edwards LifeSciences, Feldschuh Foundation, Fire1, Gradient, Intershunt, NXT Biomedical, Pharmacosmos, PreHealth, Splendo, Vironix, Viscardia, and Zoll. Dr. Mullens discloses receiving fees for speaking from Medtronic, Abbott, Novartis, Boston Scientific, AstraZeneca, and Boehringer Ingelheim.

A version of this article first appeared on Medscape.com.

A small group of patients with heart failure (HF) who underwent a novel transcatheter nerve-ablation procedure seemed to benefit with improved hemodynamics, symptoms, and quality of life in an admittedly limited observational series.

All had HF with preserved ejection fraction (HFpEF) and remained on guideline-directed medical therapy during the study.

The open-label experience has launched a randomized trial, featuring a sham control group, that could ultimately challenge dogma about volume overload in patients with chronic and acute HF and the perceived essential role of diuretics.

Researchers see transvenous ablation of the right greater splanchnic nerve (GSN) as potentially appropriate for patients with HF, regardless of ventricular function or acuity. But the ongoing REBALANCE-HF trial aims to enroll up to 80 patients with chronic HFpEF.

Meanwhile, the current 18 patients with elevated resting or exertional pulmonary capillary wedge pressure (PCWP), given the procedure as part of the main trial’s “roll-in” phase, showed declines in exercise PCWP after 1 month (P = .007) and improved quality-of-life scores at both 1 and 3 months (P < .01). Also at 1 month, a third of the patients improved by at least one step in NYHA functional class.

The procedure, called splanchnic ablation for volume management (SAVM), could potentially be used “across the spectrum of acute and chronic heart failure, maybe even with reduced ejection fraction (HFrEF) and preserved ejection fraction,” Marat Fudim, MD, MHS, Duke University Medical Center, Durham, N.C., told this news organization.

However, “for outcomes, we’ve really only looked in the ambulatory setting,” and only at symptomatic and functional responses. To that extent, based on the current experience and a few small previous studies, Dr. Fudim said, SAVM seems to benefit patients with HF in general who have dyspnea at exercise. Beyond that, the kind of patient who may be most suitable for it “is something I hope we will be able answer once the randomized dataset is in.”

Dr. Fudim reported the REBALANCE-HF roll-in results at the Heart Failure Association of the European Society of Cardiology (HFA-ESC) 2022 sessions, held virtually and live in Madrid. He is also lead author on the same-day publication in the European Journal of Heart Failure.

A different treatment paradigm

Splanchnic-nerve blockade as a possible HF treatment is based on growing evidence that volume overload in patients with HF is not always the cause, at least not a main cause, of congestion and dyspnea. Rather, those classic HF signs and symptoms may often be triggered by adverse redistribution of stable fluid volume from primarily the splanchnic vascular compartment to the intrathoracic space.

In other words, what might seem like classic volume overload calling for diuresis often might actually be euvolemic redistribution of fluid from the abdomen to the chest, raising intracardiac pressures and causing dyspnea.

In that scenario, loop diuretics might only dehydrate the patient and potentially put the kidneys at risk, Dr. Fudim proposed. His recent experience with HF patients implanted with a pulmonary-artery pressure monitor, he said, suggests many who received standard volume-overload therapy had actually been normo- or hypovolemic.

More then half the patients “did not have high volume, they just had high pressures,” he said. “So there is a significant portion of the population that has pathological processes leading to high pressures, but it’s not volume overload. Diuresing those patients would probably not be the right decision.”

The unilateral SAVM procedure appears to attenuate sympathetically mediated splanchnic volume redistribution to the heart and lungs, but as it doesn’t affect the left GSN, preserves some normal sympathetic response.

Sometimes in studies of surgical or catheter-based SAVM, Dr. Fudim said, “we have observationally seen that people discontinued diuretics or decreased doses in the treatment arm.”
 

‘Beyond our classical thinking’

It’s “impressive” that such right-GSN ablation seemed to reduce exercise-filling pressures, but one should be circumspect because “it’s way beyond our classical thinking,” Wilfried Mullens, MD, PhD, Hospital Oost-Limburg, Genk, Belgium, said as a panelist after Dr. Fudim’s presentation.

“These are invasive procedures,” he noted, “and our physiological understanding does not always match up with what we’re doing in real life, if you look at other interventional procedures, like renal denervation, which showed neutral effects, or if you look at even interatrial shunt devices, which might even be dangerous.”

The field should be “very prudent” before using SAVM in practice, which shouldn’t be “before we have sufficient data to support the efficacy and safety,” Dr. Mullens said. “It remains to be seen how treatment success will be defined. Is it during exercise? How long does the treatment last? What is the effect of the treatment over time; is it not harmful? These are things that we don’t know yet.”

The procedure was considered successful in all 18 patients, 14 of whom were women and 16 of whom were in NYHA class 3. Their average age was 75, and their mean left ventricular ejection fraction (LVEF) at baseline was 61%. The primary efficacy endpoints were a reduction in PCWP at rest, with legs raised, and at 20W exercise at 1 month. Their baseline invasively measured peak exercise PCWP was at least 25 mm Hg.

At 1 month, mean PCWP at 20W exercise fell from 36.4 mm Hg to 28.9 mm Hg (P = .007) and peak PCWP declined from 39.5 mm Hg to 31.9 mm Hg (P = .013); resting PCWP wasn’t significantly affected. Twelve patients improved by at least one NYHA functional class (P = .02).

Scores on the Kansas City Cardiomyopathy Questionnaire (KCCQ), which assesses quality of life, improved by 22 points at 1 month and 18.3 points at 3 months (P < .01 for both differences).

No significant effects on 6-minute walk distance or natriuretic peptide levels were observed, nor were any observed on LVEF or echocardiographic measures of diastolic function, left ventricular (LV) atrial volume, or LV mass at 3 months.

Three “nonserious” device-related adverse events were observed, including one case of acute decompensation early in the experience, ostensibly due to excessive saline administration, Dr. Fudim reported. There was also one case of transient periprocedural hypertension and one instance of postprocedure back pain.

The SAVM procedure is performed transvenously and in general is technically “really not that challenging,” Dr. Fudim said. In most cases, the necessary skills would be accessible not only to interventional cardiologists but also heart failure specialists. “I have performed this procedure myself, and I’m a heart failure guy.”

The REBALANCE-HF roll-in phase and main trial are supported by Axon Therapies. Dr. Fudim discloses receiving support from Bayer, Bodyport, and BTG Specialty Pharmaceuticals; and consulting fees from Abbott, Audicor, Axon Therapies, Bodyguide, Bodyport, Boston Scientific, CVRx, Daxor, Edwards LifeSciences, Feldschuh Foundation, Fire1, Gradient, Intershunt, NXT Biomedical, Pharmacosmos, PreHealth, Splendo, Vironix, Viscardia, and Zoll. Dr. Mullens discloses receiving fees for speaking from Medtronic, Abbott, Novartis, Boston Scientific, AstraZeneca, and Boehringer Ingelheim.

A version of this article first appeared on Medscape.com.

Use of sodium–glucose cotransporter-2 (SGLT-2) inhibitors rather than metformin as first-line treatment for type 2 diabetes appears to cut the risk for heart failure hospitalization but not myocardial infarction, stroke, or all-cause mortality, a new analysis of real-world data suggests.

Safety findings were similar, except for the fact that genital infections were more common with SGLT-2 inhibitors.

The study was conducted using claims data from two large U.S. insurance databases and Medicare. Propensity score matching was used to account for baseline differences.

The study was conducted by HoJin Shin, BPharm, PhD, a postdoctoral research fellow at Brigham and Women’s Hospital and Harvard Medical School, both in Boston, and colleagues. The findings were published online in Annals of Internal Medicine.

“Those who start SGLT-2 inhibitors as first line show similar risks, compared with metformin in MI, stroke, and all-cause mortality outcomes. Strikingly and consistently, SGLT-2 inhibitors show lower risk for hospitalization for heart failure, which is consistent with the findings from cardiovascular outcomes trials,” Dr. Shin said in an interview.
 

Just a beginning step, although trial probably wasn’t long enough

However, she added, “I don’t want to overstate anything. ... We aren’t powered enough to investigate who would benefit the most. ... As a pharmacoepidemiologist, I think it’s my duty to provide high-quality evidence so we can actually help physicians and patients make better decisions on their medication. Our current research is just a beginning step.”

Asked to comment, Simeon I. Taylor, MD, PhD, professor of medicine at the University of Maryland, Baltimore, told this news organization, “This study generally confirmed conclusions from published RCTs [randomized clinical trials]. No real surprises, albeit the conclusions may not fully support some of the most enthusiastic claims for SGLT-2 inhibitors with respect to MI, stroke, and cardiovascular death.”

Indeed, Dr. Taylor noted that only two SGLT-2 inhibitors, canagliflozin and empagliflozin, were shown to have a statistically significant association with decreased major adverse cardiovascular events.

In contrast, neither dapagliflozin nor ertugliflozin showed significant benefit regarding those outcomes.

He also pointed out that those four major SLGT-2 inhibitor cardiovascular outcomes trials were placebo-controlled rather than head-to-head trials in which they were compared to an active comparator such as metformin.

“Viewed in this light, it’s probably not surprising that the present study did not demonstrate a robust benefit for SGLT-2 inhibitors to decrease [major adverse CV events].”

The duration of follow-up in the current study is also a limitation, he added.

“The majority of patients were followed for a year or less. This is probably sufficient to assess the impact of some pharmacological mechanisms, for example, the beneficial impact to decrease risk of heart failure by promoting urinary sodium excretion. However, it’s probably insufficient time to observe a beneficial impact on atherosclerosis. For example, there is typically a lag of several years before statins demonstrate efficacy with respect to adverse cardiovascular events.”

Nevertheless, he said, “it provides strong support for benefit with respect to decreasing risk of hospitalization for heart failure.”

He noted that while metformin is currently significantly cheaper than any SGLT-2 inhibitors, once the latter become available as generics, they will be cheaper, and this will likely have a bearing on prescribing decisions.

“Availability of generic SGLT-2 inhibitors offers potential to transform prescribing patterns for type 2 diabetes,” he noted.

First-line SGLT2 inhibitors versus metformin: Most outcomes similar

The study data came from two commercial U.S. health insurance databases, Optum Clinfomatics Data Mart and IBM Marketscan, and from Medicare fee-for-service enrollees.

From April 2013 through March 2020, a total of 9,334 patients began treatment with first-line SGLT-2 inhibitors; 819,973 patients began taking metformin. After 1:2 propensity score matching for confounders, there were 8,613 participants in the SGLT-2 inhibitor group and 17,226 in the group that began treatment with metformin.

The mean follow-up times were 10.7 months for patients taking SGLT-2 inhibitors and 12.2 months for patients taking metformin.

Incidence rates per 1,000 person-years for the composite of hospitalization for MI, hospitalization for ischemic or hemorrhagic stroke, or all-cause mortality (MI/stroke/mortality) were 15.0 versus 16.2 for SLGT-2 inhibitors versus metformin, not a significant difference (hazard ratio, 0.96).

However, for the composite of heart failure hospitalization or all-cause mortality, the rates were 18.3 versus 23.5, a significant difference, with an HR of 0.80. The benefit was seen beginning at about 6 months.

Compared with metformin, SGLT-2 inhibitors showed a significantly lower risk for heart failure hospitalization (HR, 0.78), a numerically (but not significantly) lower risk for MI (HR, 0.70), and similar risks for stroke, mortality, and MI/stroke/HHF/mortality.

Genital infections were significantly more common with SGLT-2 inhibitors (54.1 vs. 23.7 per 1,000 person-years; HR, 2.19). Other safety measures were similar, including acute kidney injury, bone fractures, severe hypoglycemia, diabetic ketoacidosis, and lower-limb amputations.
 

How does cost factor in?

A sensitivity analysis aimed at examining the possible effect of unmeasured socioeconomic status showed no difference in cardiovascular benefit for first-line SGLT-2 inhibitors and metformin, compared with first-line dipeptidyl peptidase–4 (DPP-4) inhibitors, which cost more than metformin; it is not known what effect DPP-4 inhibitors have on the cardiovascular outcomes of interest.

Cost and insurance coverage factor into the benefit/risk calculation. Metformin is far less costly than any of the SGLT-2 inhibitors – roughly $10 to $20 per month, compared with more than $500 a month.

However, “for some fortunate patients with the most generous pharmacy benefit insurance coverage, the out-of-pocket cost of brand name drugs like SGLT-2 inhibitors is substantially lower,” Dr. Taylor noted.

He said that the current study “raises questions about whether the clinical benefits of SGLT-2 inhibitors as initial monotherapy justify the higher price relative to metformin. The data in this paper suggest that the value case for SGLT-2 inhibitors is strongest for patients with the greatest risk to be hospitalized for heart failure.”

Indeed, Dr. Shin said, “Once we get more information, it may just help in extending the coverage from insurance companies and Medicare/Medicaid, to lower the barrier to access.”

Dr. Taylor reiterated that patents on some of the early SGLT-2 inhibitors are expected to expire in the next few years, which would make it possible for generic versions to be approved. “At that point, prices would likely fall, possibly to levels similar to metformin.”

The study was funded by grant support from the Division of Pharmacoepidemiology and Pharmacoeconomics, department of medicine, Brigham and Women’s Hospital, and Harvard Medical School, the National Institute on Aging, and the Patient-Centered Outcomes Research Institute. Dr. Shin has disclosed no relevant financial relationships. Dr. Taylor is a consultant for Ionis Pharmaceuticals.

A version of this article first appeared on Medscape.com.

Use of sodium–glucose cotransporter-2 (SGLT-2) inhibitors rather than metformin as first-line treatment for type 2 diabetes appears to cut the risk for heart failure hospitalization but not myocardial infarction, stroke, or all-cause mortality, a new analysis of real-world data suggests.

Safety findings were similar, except for the fact that genital infections were more common with SGLT-2 inhibitors.

The study was conducted using claims data from two large U.S. insurance databases and Medicare. Propensity score matching was used to account for baseline differences.

The study was conducted by HoJin Shin, BPharm, PhD, a postdoctoral research fellow at Brigham and Women’s Hospital and Harvard Medical School, both in Boston, and colleagues. The findings were published online in Annals of Internal Medicine.

“Those who start SGLT-2 inhibitors as first line show similar risks, compared with metformin in MI, stroke, and all-cause mortality outcomes. Strikingly and consistently, SGLT-2 inhibitors show lower risk for hospitalization for heart failure, which is consistent with the findings from cardiovascular outcomes trials,” Dr. Shin said in an interview.
 

Just a beginning step, although trial probably wasn’t long enough

However, she added, “I don’t want to overstate anything. ... We aren’t powered enough to investigate who would benefit the most. ... As a pharmacoepidemiologist, I think it’s my duty to provide high-quality evidence so we can actually help physicians and patients make better decisions on their medication. Our current research is just a beginning step.”

Asked to comment, Simeon I. Taylor, MD, PhD, professor of medicine at the University of Maryland, Baltimore, told this news organization, “This study generally confirmed conclusions from published RCTs [randomized clinical trials]. No real surprises, albeit the conclusions may not fully support some of the most enthusiastic claims for SGLT-2 inhibitors with respect to MI, stroke, and cardiovascular death.”

Indeed, Dr. Taylor noted that only two SGLT-2 inhibitors, canagliflozin and empagliflozin, were shown to have a statistically significant association with decreased major adverse cardiovascular events.

In contrast, neither dapagliflozin nor ertugliflozin showed significant benefit regarding those outcomes.

He also pointed out that those four major SLGT-2 inhibitor cardiovascular outcomes trials were placebo-controlled rather than head-to-head trials in which they were compared to an active comparator such as metformin.

“Viewed in this light, it’s probably not surprising that the present study did not demonstrate a robust benefit for SGLT-2 inhibitors to decrease [major adverse CV events].”

The duration of follow-up in the current study is also a limitation, he added.

“The majority of patients were followed for a year or less. This is probably sufficient to assess the impact of some pharmacological mechanisms, for example, the beneficial impact to decrease risk of heart failure by promoting urinary sodium excretion. However, it’s probably insufficient time to observe a beneficial impact on atherosclerosis. For example, there is typically a lag of several years before statins demonstrate efficacy with respect to adverse cardiovascular events.”

Nevertheless, he said, “it provides strong support for benefit with respect to decreasing risk of hospitalization for heart failure.”

He noted that while metformin is currently significantly cheaper than any SGLT-2 inhibitors, once the latter become available as generics, they will be cheaper, and this will likely have a bearing on prescribing decisions.

“Availability of generic SGLT-2 inhibitors offers potential to transform prescribing patterns for type 2 diabetes,” he noted.

First-line SGLT2 inhibitors versus metformin: Most outcomes similar

The study data came from two commercial U.S. health insurance databases, Optum Clinfomatics Data Mart and IBM Marketscan, and from Medicare fee-for-service enrollees.

From April 2013 through March 2020, a total of 9,334 patients began treatment with first-line SGLT-2 inhibitors; 819,973 patients began taking metformin. After 1:2 propensity score matching for confounders, there were 8,613 participants in the SGLT-2 inhibitor group and 17,226 in the group that began treatment with metformin.

The mean follow-up times were 10.7 months for patients taking SGLT-2 inhibitors and 12.2 months for patients taking metformin.

Incidence rates per 1,000 person-years for the composite of hospitalization for MI, hospitalization for ischemic or hemorrhagic stroke, or all-cause mortality (MI/stroke/mortality) were 15.0 versus 16.2 for SLGT-2 inhibitors versus metformin, not a significant difference (hazard ratio, 0.96).

However, for the composite of heart failure hospitalization or all-cause mortality, the rates were 18.3 versus 23.5, a significant difference, with an HR of 0.80. The benefit was seen beginning at about 6 months.

Compared with metformin, SGLT-2 inhibitors showed a significantly lower risk for heart failure hospitalization (HR, 0.78), a numerically (but not significantly) lower risk for MI (HR, 0.70), and similar risks for stroke, mortality, and MI/stroke/HHF/mortality.

Genital infections were significantly more common with SGLT-2 inhibitors (54.1 vs. 23.7 per 1,000 person-years; HR, 2.19). Other safety measures were similar, including acute kidney injury, bone fractures, severe hypoglycemia, diabetic ketoacidosis, and lower-limb amputations.
 

How does cost factor in?

A sensitivity analysis aimed at examining the possible effect of unmeasured socioeconomic status showed no difference in cardiovascular benefit for first-line SGLT-2 inhibitors and metformin, compared with first-line dipeptidyl peptidase–4 (DPP-4) inhibitors, which cost more than metformin; it is not known what effect DPP-4 inhibitors have on the cardiovascular outcomes of interest.

Cost and insurance coverage factor into the benefit/risk calculation. Metformin is far less costly than any of the SGLT-2 inhibitors – roughly $10 to $20 per month, compared with more than $500 a month.

However, “for some fortunate patients with the most generous pharmacy benefit insurance coverage, the out-of-pocket cost of brand name drugs like SGLT-2 inhibitors is substantially lower,” Dr. Taylor noted.

He said that the current study “raises questions about whether the clinical benefits of SGLT-2 inhibitors as initial monotherapy justify the higher price relative to metformin. The data in this paper suggest that the value case for SGLT-2 inhibitors is strongest for patients with the greatest risk to be hospitalized for heart failure.”

Indeed, Dr. Shin said, “Once we get more information, it may just help in extending the coverage from insurance companies and Medicare/Medicaid, to lower the barrier to access.”

Dr. Taylor reiterated that patents on some of the early SGLT-2 inhibitors are expected to expire in the next few years, which would make it possible for generic versions to be approved. “At that point, prices would likely fall, possibly to levels similar to metformin.”

The study was funded by grant support from the Division of Pharmacoepidemiology and Pharmacoeconomics, department of medicine, Brigham and Women’s Hospital, and Harvard Medical School, the National Institute on Aging, and the Patient-Centered Outcomes Research Institute. Dr. Shin has disclosed no relevant financial relationships. Dr. Taylor is a consultant for Ionis Pharmaceuticals.

A version of this article first appeared on Medscape.com.

Use of sodium–glucose cotransporter-2 (SGLT-2) inhibitors rather than metformin as first-line treatment for type 2 diabetes appears to cut the risk for heart failure hospitalization but not myocardial infarction, stroke, or all-cause mortality, a new analysis of real-world data suggests.

Safety findings were similar, except for the fact that genital infections were more common with SGLT-2 inhibitors.

The study was conducted using claims data from two large U.S. insurance databases and Medicare. Propensity score matching was used to account for baseline differences.

The study was conducted by HoJin Shin, BPharm, PhD, a postdoctoral research fellow at Brigham and Women’s Hospital and Harvard Medical School, both in Boston, and colleagues. The findings were published online in Annals of Internal Medicine.

“Those who start SGLT-2 inhibitors as first line show similar risks, compared with metformin in MI, stroke, and all-cause mortality outcomes. Strikingly and consistently, SGLT-2 inhibitors show lower risk for hospitalization for heart failure, which is consistent with the findings from cardiovascular outcomes trials,” Dr. Shin said in an interview.
 

Just a beginning step, although trial probably wasn’t long enough

However, she added, “I don’t want to overstate anything. ... We aren’t powered enough to investigate who would benefit the most. ... As a pharmacoepidemiologist, I think it’s my duty to provide high-quality evidence so we can actually help physicians and patients make better decisions on their medication. Our current research is just a beginning step.”

Asked to comment, Simeon I. Taylor, MD, PhD, professor of medicine at the University of Maryland, Baltimore, told this news organization, “This study generally confirmed conclusions from published RCTs [randomized clinical trials]. No real surprises, albeit the conclusions may not fully support some of the most enthusiastic claims for SGLT-2 inhibitors with respect to MI, stroke, and cardiovascular death.”

Indeed, Dr. Taylor noted that only two SGLT-2 inhibitors, canagliflozin and empagliflozin, were shown to have a statistically significant association with decreased major adverse cardiovascular events.

In contrast, neither dapagliflozin nor ertugliflozin showed significant benefit regarding those outcomes.

He also pointed out that those four major SLGT-2 inhibitor cardiovascular outcomes trials were placebo-controlled rather than head-to-head trials in which they were compared to an active comparator such as metformin.

“Viewed in this light, it’s probably not surprising that the present study did not demonstrate a robust benefit for SGLT-2 inhibitors to decrease [major adverse CV events].”

The duration of follow-up in the current study is also a limitation, he added.

“The majority of patients were followed for a year or less. This is probably sufficient to assess the impact of some pharmacological mechanisms, for example, the beneficial impact to decrease risk of heart failure by promoting urinary sodium excretion. However, it’s probably insufficient time to observe a beneficial impact on atherosclerosis. For example, there is typically a lag of several years before statins demonstrate efficacy with respect to adverse cardiovascular events.”

Nevertheless, he said, “it provides strong support for benefit with respect to decreasing risk of hospitalization for heart failure.”

He noted that while metformin is currently significantly cheaper than any SGLT-2 inhibitors, once the latter become available as generics, they will be cheaper, and this will likely have a bearing on prescribing decisions.

“Availability of generic SGLT-2 inhibitors offers potential to transform prescribing patterns for type 2 diabetes,” he noted.

First-line SGLT2 inhibitors versus metformin: Most outcomes similar

The study data came from two commercial U.S. health insurance databases, Optum Clinfomatics Data Mart and IBM Marketscan, and from Medicare fee-for-service enrollees.

From April 2013 through March 2020, a total of 9,334 patients began treatment with first-line SGLT-2 inhibitors; 819,973 patients began taking metformin. After 1:2 propensity score matching for confounders, there were 8,613 participants in the SGLT-2 inhibitor group and 17,226 in the group that began treatment with metformin.

The mean follow-up times were 10.7 months for patients taking SGLT-2 inhibitors and 12.2 months for patients taking metformin.

Incidence rates per 1,000 person-years for the composite of hospitalization for MI, hospitalization for ischemic or hemorrhagic stroke, or all-cause mortality (MI/stroke/mortality) were 15.0 versus 16.2 for SLGT-2 inhibitors versus metformin, not a significant difference (hazard ratio, 0.96).

However, for the composite of heart failure hospitalization or all-cause mortality, the rates were 18.3 versus 23.5, a significant difference, with an HR of 0.80. The benefit was seen beginning at about 6 months.

Compared with metformin, SGLT-2 inhibitors showed a significantly lower risk for heart failure hospitalization (HR, 0.78), a numerically (but not significantly) lower risk for MI (HR, 0.70), and similar risks for stroke, mortality, and MI/stroke/HHF/mortality.

Genital infections were significantly more common with SGLT-2 inhibitors (54.1 vs. 23.7 per 1,000 person-years; HR, 2.19). Other safety measures were similar, including acute kidney injury, bone fractures, severe hypoglycemia, diabetic ketoacidosis, and lower-limb amputations.
 

How does cost factor in?

A sensitivity analysis aimed at examining the possible effect of unmeasured socioeconomic status showed no difference in cardiovascular benefit for first-line SGLT-2 inhibitors and metformin, compared with first-line dipeptidyl peptidase–4 (DPP-4) inhibitors, which cost more than metformin; it is not known what effect DPP-4 inhibitors have on the cardiovascular outcomes of interest.

Cost and insurance coverage factor into the benefit/risk calculation. Metformin is far less costly than any of the SGLT-2 inhibitors – roughly $10 to $20 per month, compared with more than $500 a month.

However, “for some fortunate patients with the most generous pharmacy benefit insurance coverage, the out-of-pocket cost of brand name drugs like SGLT-2 inhibitors is substantially lower,” Dr. Taylor noted.

He said that the current study “raises questions about whether the clinical benefits of SGLT-2 inhibitors as initial monotherapy justify the higher price relative to metformin. The data in this paper suggest that the value case for SGLT-2 inhibitors is strongest for patients with the greatest risk to be hospitalized for heart failure.”

Indeed, Dr. Shin said, “Once we get more information, it may just help in extending the coverage from insurance companies and Medicare/Medicaid, to lower the barrier to access.”

Dr. Taylor reiterated that patents on some of the early SGLT-2 inhibitors are expected to expire in the next few years, which would make it possible for generic versions to be approved. “At that point, prices would likely fall, possibly to levels similar to metformin.”

The study was funded by grant support from the Division of Pharmacoepidemiology and Pharmacoeconomics, department of medicine, Brigham and Women’s Hospital, and Harvard Medical School, the National Institute on Aging, and the Patient-Centered Outcomes Research Institute. Dr. Shin has disclosed no relevant financial relationships. Dr. Taylor is a consultant for Ionis Pharmaceuticals.

A version of this article first appeared on Medscape.com.

Takotsubo syndrome occurs much more frequently in women than it does in men, but men are much more likely to die from it, according to the results of a new study.

In an analysis of almost 2,500 patients with Takotsubo syndrome (TSS) who were enrolled in an international registry, men, who made up just 11% of the sample, had significantly higher rates of cardiogenic shock and were more than twice as likely to die in the hospital than their female counterparts.

The authors concluded that TSS in males requires close in-hospital monitoring and long-term follow-up. Their study was published in the Journal of the American College of Cardiology.

Takotsubo syndrome is a condition characterized by acute heart failure and transient ventricular contractile dysfunction that can be precipitated by acute emotional or physical stress. It affects mostly women, particularly postmenopausal women, although the reasons for this are still not fully clear, Luca Arcari, MD, from the Institute of Cardiology, Madre Giuseppina Vannini Hospital, Rome, and colleagues wrote.

The syndrome also affects men, and recent data have identified that male sex is associated with worse outcomes. But, because it occurs relatively uncommonly in men, information about outcomes in men is limited.

To shed more light on the influence of gender on TTS, the investigators looked at 2,492 TTS patients (286 men, 2,206 women) who were participants in the GEIST (German Italian Spanish Takotsubo) registry and compared the clinical features and short- and long-term outcomes between the two.

Male patients were significantly younger (69 years) than women (71 years; P = .005) and had a higher prevalence of comorbid conditions, including diabetes (25% vs. 19%; P = .01); pulmonary diseases (21% vs. 15%; P = .006); malignancies (25% vs. 13%; P < .001).

In addition, TTS in men was more likely to be caused by physical triggers (55% vs. 32%; P < .01), whereas emotional triggers were more common in females (39% vs. 19%; P < 0.001).

The investigators then performed a propensity score analysis by matching men and women 1:1; this yielded 207 patients from each group.

After propensity matching, male patients had higher rates of cardiogenic shock (16% vs 6%), and in-hospital mortality (8% vs. 3%; both P < .05).

Men also had a higher mortality rate during the acute and long-term follow up. Male sex remained independently associated with both in-hospital mortality (odds ratio, 2.26; 95% confidence interval, 1.16-4.40) and long-term mortality (hazard ratio, 1.83; 95% CI, 1.32-2.52).

The study by Dr. Arcari and colleagues “shows convincingly that although men are far less likely to develop TTS than women, they have more serious complications and are more likely to die than women presenting with the syndrome, Ilan S. Wittstein, MD, of Johns Hopkins University, Baltimore, wrote in an accompanying editorial.

In an interview, Dr. Wittstein said one of the strengths of the study was its size.

“Over the years, there have been a lot of smaller, single center studies. This large registry had over 2,000 patients. So when the researchers say the rate of TTS is 10% in men and 90% in women, this is not necessarily surprising because that’s about the breakdown we’ve had since the very beginning, but it certainly validates that in a cohort that is large,” he said.

“I think what was novel about the paper is that the size of the cohort allowed the researchers to do propensity matching, so they were able not only to compare men versus women, they could do a 1:1 comparison. And they found even when you match men and women for various comorbidities, the men were much sicker

“What makes this a fascinating syndrome and different from most types of heart muscle problems is that, in the majority of patients, the condition is precipitated by an acute stressor,” said Dr. Wittstein.

“It can either be an emotional trigger, so for instance, getting some bad news that a loved one just died. That’s why we nicknamed the syndrome ‘broken heart syndrome’ many years ago. Or it can be a physical trigger, which can be a wide variety of things, such infection, a stroke, bad pneumonia, anything that stresses the body and causes a stress response. Regular heart attacks are not triggered in this way,” he said.

Dr. Arcari and Dr. Wittstein reported no relevant financial relationships.

 

Takotsubo syndrome occurs much more frequently in women than it does in men, but men are much more likely to die from it, according to the results of a new study.

In an analysis of almost 2,500 patients with Takotsubo syndrome (TSS) who were enrolled in an international registry, men, who made up just 11% of the sample, had significantly higher rates of cardiogenic shock and were more than twice as likely to die in the hospital than their female counterparts.

The authors concluded that TSS in males requires close in-hospital monitoring and long-term follow-up. Their study was published in the Journal of the American College of Cardiology.

Takotsubo syndrome is a condition characterized by acute heart failure and transient ventricular contractile dysfunction that can be precipitated by acute emotional or physical stress. It affects mostly women, particularly postmenopausal women, although the reasons for this are still not fully clear, Luca Arcari, MD, from the Institute of Cardiology, Madre Giuseppina Vannini Hospital, Rome, and colleagues wrote.

The syndrome also affects men, and recent data have identified that male sex is associated with worse outcomes. But, because it occurs relatively uncommonly in men, information about outcomes in men is limited.

To shed more light on the influence of gender on TTS, the investigators looked at 2,492 TTS patients (286 men, 2,206 women) who were participants in the GEIST (German Italian Spanish Takotsubo) registry and compared the clinical features and short- and long-term outcomes between the two.

Male patients were significantly younger (69 years) than women (71 years; P = .005) and had a higher prevalence of comorbid conditions, including diabetes (25% vs. 19%; P = .01); pulmonary diseases (21% vs. 15%; P = .006); malignancies (25% vs. 13%; P < .001).

In addition, TTS in men was more likely to be caused by physical triggers (55% vs. 32%; P < .01), whereas emotional triggers were more common in females (39% vs. 19%; P < 0.001).

The investigators then performed a propensity score analysis by matching men and women 1:1; this yielded 207 patients from each group.

After propensity matching, male patients had higher rates of cardiogenic shock (16% vs 6%), and in-hospital mortality (8% vs. 3%; both P < .05).

Men also had a higher mortality rate during the acute and long-term follow up. Male sex remained independently associated with both in-hospital mortality (odds ratio, 2.26; 95% confidence interval, 1.16-4.40) and long-term mortality (hazard ratio, 1.83; 95% CI, 1.32-2.52).

The study by Dr. Arcari and colleagues “shows convincingly that although men are far less likely to develop TTS than women, they have more serious complications and are more likely to die than women presenting with the syndrome, Ilan S. Wittstein, MD, of Johns Hopkins University, Baltimore, wrote in an accompanying editorial.

In an interview, Dr. Wittstein said one of the strengths of the study was its size.

“Over the years, there have been a lot of smaller, single center studies. This large registry had over 2,000 patients. So when the researchers say the rate of TTS is 10% in men and 90% in women, this is not necessarily surprising because that’s about the breakdown we’ve had since the very beginning, but it certainly validates that in a cohort that is large,” he said.

“I think what was novel about the paper is that the size of the cohort allowed the researchers to do propensity matching, so they were able not only to compare men versus women, they could do a 1:1 comparison. And they found even when you match men and women for various comorbidities, the men were much sicker

“What makes this a fascinating syndrome and different from most types of heart muscle problems is that, in the majority of patients, the condition is precipitated by an acute stressor,” said Dr. Wittstein.

“It can either be an emotional trigger, so for instance, getting some bad news that a loved one just died. That’s why we nicknamed the syndrome ‘broken heart syndrome’ many years ago. Or it can be a physical trigger, which can be a wide variety of things, such infection, a stroke, bad pneumonia, anything that stresses the body and causes a stress response. Regular heart attacks are not triggered in this way,” he said.

Dr. Arcari and Dr. Wittstein reported no relevant financial relationships.

 

Takotsubo syndrome occurs much more frequently in women than it does in men, but men are much more likely to die from it, according to the results of a new study.

In an analysis of almost 2,500 patients with Takotsubo syndrome (TSS) who were enrolled in an international registry, men, who made up just 11% of the sample, had significantly higher rates of cardiogenic shock and were more than twice as likely to die in the hospital than their female counterparts.

The authors concluded that TSS in males requires close in-hospital monitoring and long-term follow-up. Their study was published in the Journal of the American College of Cardiology.

Takotsubo syndrome is a condition characterized by acute heart failure and transient ventricular contractile dysfunction that can be precipitated by acute emotional or physical stress. It affects mostly women, particularly postmenopausal women, although the reasons for this are still not fully clear, Luca Arcari, MD, from the Institute of Cardiology, Madre Giuseppina Vannini Hospital, Rome, and colleagues wrote.

The syndrome also affects men, and recent data have identified that male sex is associated with worse outcomes. But, because it occurs relatively uncommonly in men, information about outcomes in men is limited.

To shed more light on the influence of gender on TTS, the investigators looked at 2,492 TTS patients (286 men, 2,206 women) who were participants in the GEIST (German Italian Spanish Takotsubo) registry and compared the clinical features and short- and long-term outcomes between the two.

Male patients were significantly younger (69 years) than women (71 years; P = .005) and had a higher prevalence of comorbid conditions, including diabetes (25% vs. 19%; P = .01); pulmonary diseases (21% vs. 15%; P = .006); malignancies (25% vs. 13%; P < .001).

In addition, TTS in men was more likely to be caused by physical triggers (55% vs. 32%; P < .01), whereas emotional triggers were more common in females (39% vs. 19%; P < 0.001).

The investigators then performed a propensity score analysis by matching men and women 1:1; this yielded 207 patients from each group.

After propensity matching, male patients had higher rates of cardiogenic shock (16% vs 6%), and in-hospital mortality (8% vs. 3%; both P < .05).

Men also had a higher mortality rate during the acute and long-term follow up. Male sex remained independently associated with both in-hospital mortality (odds ratio, 2.26; 95% confidence interval, 1.16-4.40) and long-term mortality (hazard ratio, 1.83; 95% CI, 1.32-2.52).

The study by Dr. Arcari and colleagues “shows convincingly that although men are far less likely to develop TTS than women, they have more serious complications and are more likely to die than women presenting with the syndrome, Ilan S. Wittstein, MD, of Johns Hopkins University, Baltimore, wrote in an accompanying editorial.

In an interview, Dr. Wittstein said one of the strengths of the study was its size.

“Over the years, there have been a lot of smaller, single center studies. This large registry had over 2,000 patients. So when the researchers say the rate of TTS is 10% in men and 90% in women, this is not necessarily surprising because that’s about the breakdown we’ve had since the very beginning, but it certainly validates that in a cohort that is large,” he said.

“I think what was novel about the paper is that the size of the cohort allowed the researchers to do propensity matching, so they were able not only to compare men versus women, they could do a 1:1 comparison. And they found even when you match men and women for various comorbidities, the men were much sicker

“What makes this a fascinating syndrome and different from most types of heart muscle problems is that, in the majority of patients, the condition is precipitated by an acute stressor,” said Dr. Wittstein.

“It can either be an emotional trigger, so for instance, getting some bad news that a loved one just died. That’s why we nicknamed the syndrome ‘broken heart syndrome’ many years ago. Or it can be a physical trigger, which can be a wide variety of things, such infection, a stroke, bad pneumonia, anything that stresses the body and causes a stress response. Regular heart attacks are not triggered in this way,” he said.

Dr. Arcari and Dr. Wittstein reported no relevant financial relationships.

 

The first in-human trials of a no-implant approach to interatrial shunting to alleviate heart failure symptoms have shown a signal that the procedure reduces peak exercise wedge pressure in recipients a month afterward, according to early trial results.

Colin M. Barker, MD, reported 30-day results of 31 patients who had no-implant interatrial shunting for heart failure across three studies, at the Society for Cardiovascular Angiography & Interventions scientific sessions. The studies included patients with HF with preserved and reduced ejection fraction (HFpEF and HFrEF).

“At 30 days, there was a response with a decrease in the wedge pressures both at rest and at peak exercise, and that was consistent through all three of these initial trials,” Dr. Barker said. In all 33 patients who have been treated to date, there were no major adverse cardiac and cerebrovascular or thromboembolic events through 1 month. (Two of the patients weren’t included in the results Dr. Barker presented.)

The three studies he reported on were the Alleviate-HF-1 (n = 15), Alleviate-HF-2 (n = 11) for patients with HFpEF, and Alleviate-HFrEF (n = 5). The average patient age was 67 years, and all were New York Heart Association class II, III, or IV with elevated peak pulmonary capillary wedge pressure (PCWP).

The device that creates the no-implant shunt as “not very exotic, but it is very effective, and what it does is create a very predictable, reproducible atrial septostomy” between the left and right atria. The device obtains “almost a biopsy” that’s 7 mm in diameter. “There’s no hardware or foreign bodies left inside the patient,” said Dr. Barker, director of interventional cardiology at Vanderbilt University in Nashville, Tenn. “There’s a natural healing process at the rims after the radiofrequency ablation has been done.” Femoral access was used.

Study participants were also asked to complete the Kansas City Cardiomyopathy Questionnaire (KCCQ) at baseline and at 1 and 3 months across all three studies, and at 6 months in the Alleviate-HF-1 study. “Just as important is how patients feel,” Dr. Barker said. KCCQ overall summary scores increased at each time interval across all three studies.

“Durability has been proven with multiple different imaging modalities,” Dr. Barker added, explaining that CT scans in 10 of 10 shunts demonstrated patency through 12 months, and 15 of 15 at 6 months. He noted that none of the created shunts have closed yet. At 6 months, the average shunt measured 7.5 mm (± 1.1 mm, n = 22), left atrial diameter decreased 2.4 mm (P = .031) in HFpEF patients, and no significant changes were observed in right ventricular fractional area change or right atrial volume index.

None of the septostomies have had to be closed or enlarged to date, Dr. Barker said. “We are creating an atrial septal defect that we have a lot of comfort and experience with closing with other devices if need be, but that hasn’t been an issue,” he said. “As of now, it’s one size, but as you can imagine, one-size-fits-all is not the way this will go, and this does allow for variations in size ultimately.”

Kirk N. Garratt, MD, director of the Center for Heart and Vascular Health at Christiana Care in Newark, Del., noted that the approach to unload the left atrium “is novel, but I think is becoming well accepted in the advanced HF population. There remain questions about long-term consequences of an intentional interatrial shunt – what happens to pulmonary flow dynamics and the like – but to date the impact of this approach has been favorable.

“The liabilities that come with an implanted device in the septal space, both in terms of the durability of the shunt and the impact that it would have on the ability to perform other transseptal procedures, is overcome with this approach,” he added. 

Dr. Barker disclosed he is an advisory board member and consultant to Alleviant Medical. Dr. Garratt is an advisory board member for Abbott.
 

The first in-human trials of a no-implant approach to interatrial shunting to alleviate heart failure symptoms have shown a signal that the procedure reduces peak exercise wedge pressure in recipients a month afterward, according to early trial results.

Colin M. Barker, MD, reported 30-day results of 31 patients who had no-implant interatrial shunting for heart failure across three studies, at the Society for Cardiovascular Angiography & Interventions scientific sessions. The studies included patients with HF with preserved and reduced ejection fraction (HFpEF and HFrEF).

“At 30 days, there was a response with a decrease in the wedge pressures both at rest and at peak exercise, and that was consistent through all three of these initial trials,” Dr. Barker said. In all 33 patients who have been treated to date, there were no major adverse cardiac and cerebrovascular or thromboembolic events through 1 month. (Two of the patients weren’t included in the results Dr. Barker presented.)

The three studies he reported on were the Alleviate-HF-1 (n = 15), Alleviate-HF-2 (n = 11) for patients with HFpEF, and Alleviate-HFrEF (n = 5). The average patient age was 67 years, and all were New York Heart Association class II, III, or IV with elevated peak pulmonary capillary wedge pressure (PCWP).

The device that creates the no-implant shunt as “not very exotic, but it is very effective, and what it does is create a very predictable, reproducible atrial septostomy” between the left and right atria. The device obtains “almost a biopsy” that’s 7 mm in diameter. “There’s no hardware or foreign bodies left inside the patient,” said Dr. Barker, director of interventional cardiology at Vanderbilt University in Nashville, Tenn. “There’s a natural healing process at the rims after the radiofrequency ablation has been done.” Femoral access was used.

Study participants were also asked to complete the Kansas City Cardiomyopathy Questionnaire (KCCQ) at baseline and at 1 and 3 months across all three studies, and at 6 months in the Alleviate-HF-1 study. “Just as important is how patients feel,” Dr. Barker said. KCCQ overall summary scores increased at each time interval across all three studies.

“Durability has been proven with multiple different imaging modalities,” Dr. Barker added, explaining that CT scans in 10 of 10 shunts demonstrated patency through 12 months, and 15 of 15 at 6 months. He noted that none of the created shunts have closed yet. At 6 months, the average shunt measured 7.5 mm (± 1.1 mm, n = 22), left atrial diameter decreased 2.4 mm (P = .031) in HFpEF patients, and no significant changes were observed in right ventricular fractional area change or right atrial volume index.

None of the septostomies have had to be closed or enlarged to date, Dr. Barker said. “We are creating an atrial septal defect that we have a lot of comfort and experience with closing with other devices if need be, but that hasn’t been an issue,” he said. “As of now, it’s one size, but as you can imagine, one-size-fits-all is not the way this will go, and this does allow for variations in size ultimately.”

Kirk N. Garratt, MD, director of the Center for Heart and Vascular Health at Christiana Care in Newark, Del., noted that the approach to unload the left atrium “is novel, but I think is becoming well accepted in the advanced HF population. There remain questions about long-term consequences of an intentional interatrial shunt – what happens to pulmonary flow dynamics and the like – but to date the impact of this approach has been favorable.

“The liabilities that come with an implanted device in the septal space, both in terms of the durability of the shunt and the impact that it would have on the ability to perform other transseptal procedures, is overcome with this approach,” he added. 

Dr. Barker disclosed he is an advisory board member and consultant to Alleviant Medical. Dr. Garratt is an advisory board member for Abbott.
 

The first in-human trials of a no-implant approach to interatrial shunting to alleviate heart failure symptoms have shown a signal that the procedure reduces peak exercise wedge pressure in recipients a month afterward, according to early trial results.

Colin M. Barker, MD, reported 30-day results of 31 patients who had no-implant interatrial shunting for heart failure across three studies, at the Society for Cardiovascular Angiography & Interventions scientific sessions. The studies included patients with HF with preserved and reduced ejection fraction (HFpEF and HFrEF).

“At 30 days, there was a response with a decrease in the wedge pressures both at rest and at peak exercise, and that was consistent through all three of these initial trials,” Dr. Barker said. In all 33 patients who have been treated to date, there were no major adverse cardiac and cerebrovascular or thromboembolic events through 1 month. (Two of the patients weren’t included in the results Dr. Barker presented.)

The three studies he reported on were the Alleviate-HF-1 (n = 15), Alleviate-HF-2 (n = 11) for patients with HFpEF, and Alleviate-HFrEF (n = 5). The average patient age was 67 years, and all were New York Heart Association class II, III, or IV with elevated peak pulmonary capillary wedge pressure (PCWP).

The device that creates the no-implant shunt as “not very exotic, but it is very effective, and what it does is create a very predictable, reproducible atrial septostomy” between the left and right atria. The device obtains “almost a biopsy” that’s 7 mm in diameter. “There’s no hardware or foreign bodies left inside the patient,” said Dr. Barker, director of interventional cardiology at Vanderbilt University in Nashville, Tenn. “There’s a natural healing process at the rims after the radiofrequency ablation has been done.” Femoral access was used.

Study participants were also asked to complete the Kansas City Cardiomyopathy Questionnaire (KCCQ) at baseline and at 1 and 3 months across all three studies, and at 6 months in the Alleviate-HF-1 study. “Just as important is how patients feel,” Dr. Barker said. KCCQ overall summary scores increased at each time interval across all three studies.

“Durability has been proven with multiple different imaging modalities,” Dr. Barker added, explaining that CT scans in 10 of 10 shunts demonstrated patency through 12 months, and 15 of 15 at 6 months. He noted that none of the created shunts have closed yet. At 6 months, the average shunt measured 7.5 mm (± 1.1 mm, n = 22), left atrial diameter decreased 2.4 mm (P = .031) in HFpEF patients, and no significant changes were observed in right ventricular fractional area change or right atrial volume index.

None of the septostomies have had to be closed or enlarged to date, Dr. Barker said. “We are creating an atrial septal defect that we have a lot of comfort and experience with closing with other devices if need be, but that hasn’t been an issue,” he said. “As of now, it’s one size, but as you can imagine, one-size-fits-all is not the way this will go, and this does allow for variations in size ultimately.”

Kirk N. Garratt, MD, director of the Center for Heart and Vascular Health at Christiana Care in Newark, Del., noted that the approach to unload the left atrium “is novel, but I think is becoming well accepted in the advanced HF population. There remain questions about long-term consequences of an intentional interatrial shunt – what happens to pulmonary flow dynamics and the like – but to date the impact of this approach has been favorable.

“The liabilities that come with an implanted device in the septal space, both in terms of the durability of the shunt and the impact that it would have on the ability to perform other transseptal procedures, is overcome with this approach,” he added. 

Dr. Barker disclosed he is an advisory board member and consultant to Alleviant Medical. Dr. Garratt is an advisory board member for Abbott.
 

A voice can carry a long distance, but in patients with heart failure (HF) a voice can also carry otherwise hidden signs useful for predicting short-term risk for worsening disease, even acute decompensation. Potentially, it only has to reach a smartphone to do it, suggests a preliminary study of a mobile app designed to alert patients and clinicians to such looming HF events, if possible in time to avert them.

The proprietary app and analysis system (HearO, Cordio Medical), used daily at home by 180 patients with stable HF, demonstrated 82% accuracy in picking out vocal signals of early congestion that would soon be followed by a need for intensified therapy or acute decompensation.

Andrew D. Bowser/MDedge News

In practice, clinicians receiving the system’s alerts about altered fluid status would intervene with medication adjustments before the patient deteriorates and possibly heads for the ED. That would be the plan; there were no interventions in the current study, which was designed only to explore the strategy’s feasibility and accuracy.

The system could emerge as “a useful tool in remote monitoring of heart failure patients, providing early warning of worsening heart failure,” said William Abraham, MD, from Ohio State University Wexner Medical Center, Columbus. “It has the potential to reduce acute decompensated heart failure hospitalizations and improve patient quality of life and economic outcomes. But, of course, we have to show that now in larger and randomized clinical studies.”

Abraham presented the Cordio HearO Community Study preliminary results at the Heart Failure Association of the European Society of Cardiology sessions. It follows a recent small study that showed the same app could identify vocal signals linked to altered fluid status in patients with HF hospitalized with acute decompensation.

In the current study, researchers prospectively tracked any worsening HF events that hit patients within a month after the system sent them an alert suggesting early changes in fluid status. Then, they retrospectively assessed the strategy’s predictive accuracy for an initial episode.

The system correctly predicted 32 of 39 first HF events, for an 82% sensitivity and a false-positive rate of 18%. On an annualized basis, Dr. Abraham said, the patients experienced an estimated two to three false alarms per year, alerts that were not followed by HF events. For context, the standard practice of monitoring the patient’s weight “has a sensitivity of about 10%-20%. So this performs very well as a noninvasive technology.”

On average, Dr. Abraham said, “we were able to detect future events about 18 days prior to the worsening heart failure event,” which in practice would provide “a pretty broad window for intervention.”

The false positives were not a surprise. Lung fluid status can change in conditions other than heart failure, he observed, and the HearO system alerts aren’t meant to be followed blindly.

“I don’t know that we clearly understand what those false-positives represent just yet,” Dr. Abraham said. “The bottom line is, as with any diagnostic tool, you have to use the totality of clinical information you have available. If you get an alert and the patient has a fever and a cough, you might think of pneumonia before worsening heart failure.”

“The false positives don’t appear to be alarming,” agreed Antoni Bayés-Genís, MD, PhD, Hospital Universitari Germans Trias i Pujol, Badalona, Spain, and Universitat Autònoma de Barcelona.

The study suggests that the HearO system, combined with sound clinical judgment, “has the potential to identify early congestion that may allow for treatment management, and then avoiding hospital admission,” Dr. Bayés-Genís, who isn’t connected with the study, said in an interview.

The entirely noninvasive, smartphone-based app would be more appealing than implanted devices that, for example, measure thoracic bioimpedance or pulmonary artery pressure and are also intended as congestion early-warning systems, he proposed. “Its scalability makes it very attractive as well.”

But all that “would have to be validated in a large clinical trial,” Dr. Bayés-Genís, who comoderated the conference session featuring Dr. Abraham’s presentation, said when interviewed.

The ongoing study has enrolled 430 clinically stable adult patients with HF in New York Heart Association functional class II or III, regardless of left ventricular ejection fraction, who were cared for by teams at eight centers in Israel. At the outset, during a period of stability, each patient spoke a few sentences into the app to establish a vocal-pattern baseline.

Once home, their assignment was to speak the same sentences into their phones once a day. The app, working through a cloud-based, artificial intelligence–derived processing system, compared each day’s vocal signature with the baseline and alerted researchers when it detected signs of altered fluid status.

About 460,000 recordings were collected from the 180 patients in the current analysis, of whom about 27% were women. They used the app for a mean of 512 days.

The system seems to work well regardless of language or dialect, Dr. Abraham said. About 70% of the current study’s patients spoke Hebrew, and most of the rest spoke either Russian or Arabic.

Most patients (almost 80%) used the app at least 70% of the prescribed time. Only 14 patients used the app less than 60% of the time, he reported.

Dr. Bayés-Genís proposed that, in practice, unfamiliarity with or resistance to smartphone technology would be unlikely to figure greatly in any nonadherence with the daily app regimen, except “maybe for the eldest of the eldest.” The current cohort’s mean age was 70 years. In his experience, he said, most older persons younger than age 80 use a smartphone, at least in more developed countries.

Dr. Abraham disclosed serving on an advisory board for and receiving consulting fees from Cordio Medical; receiving consulting fees from Abbott, Boehringer Ingelheim, CVRx, Edwards Lifesciences, and Respicardia; receiving salary from V-Wave Medical; and receiving research support from the National Heart, Lung, and Blood Institute. Dr. Bayés-Genís reported receiving personal fees from AstraZeneca, Vifor-Fresenius, Novartis, Boehringer Ingelheim, Abbott, Roche Diagnostics, and Critical Diagnostics.

A version of this article first appeared on Medscape.com.

A voice can carry a long distance, but in patients with heart failure (HF) a voice can also carry otherwise hidden signs useful for predicting short-term risk for worsening disease, even acute decompensation. Potentially, it only has to reach a smartphone to do it, suggests a preliminary study of a mobile app designed to alert patients and clinicians to such looming HF events, if possible in time to avert them.

The proprietary app and analysis system (HearO, Cordio Medical), used daily at home by 180 patients with stable HF, demonstrated 82% accuracy in picking out vocal signals of early congestion that would soon be followed by a need for intensified therapy or acute decompensation.

Andrew D. Bowser/MDedge News

In practice, clinicians receiving the system’s alerts about altered fluid status would intervene with medication adjustments before the patient deteriorates and possibly heads for the ED. That would be the plan; there were no interventions in the current study, which was designed only to explore the strategy’s feasibility and accuracy.

The system could emerge as “a useful tool in remote monitoring of heart failure patients, providing early warning of worsening heart failure,” said William Abraham, MD, from Ohio State University Wexner Medical Center, Columbus. “It has the potential to reduce acute decompensated heart failure hospitalizations and improve patient quality of life and economic outcomes. But, of course, we have to show that now in larger and randomized clinical studies.”

Abraham presented the Cordio HearO Community Study preliminary results at the Heart Failure Association of the European Society of Cardiology sessions. It follows a recent small study that showed the same app could identify vocal signals linked to altered fluid status in patients with HF hospitalized with acute decompensation.

In the current study, researchers prospectively tracked any worsening HF events that hit patients within a month after the system sent them an alert suggesting early changes in fluid status. Then, they retrospectively assessed the strategy’s predictive accuracy for an initial episode.

The system correctly predicted 32 of 39 first HF events, for an 82% sensitivity and a false-positive rate of 18%. On an annualized basis, Dr. Abraham said, the patients experienced an estimated two to three false alarms per year, alerts that were not followed by HF events. For context, the standard practice of monitoring the patient’s weight “has a sensitivity of about 10%-20%. So this performs very well as a noninvasive technology.”

On average, Dr. Abraham said, “we were able to detect future events about 18 days prior to the worsening heart failure event,” which in practice would provide “a pretty broad window for intervention.”

The false positives were not a surprise. Lung fluid status can change in conditions other than heart failure, he observed, and the HearO system alerts aren’t meant to be followed blindly.

“I don’t know that we clearly understand what those false-positives represent just yet,” Dr. Abraham said. “The bottom line is, as with any diagnostic tool, you have to use the totality of clinical information you have available. If you get an alert and the patient has a fever and a cough, you might think of pneumonia before worsening heart failure.”

“The false positives don’t appear to be alarming,” agreed Antoni Bayés-Genís, MD, PhD, Hospital Universitari Germans Trias i Pujol, Badalona, Spain, and Universitat Autònoma de Barcelona.

The study suggests that the HearO system, combined with sound clinical judgment, “has the potential to identify early congestion that may allow for treatment management, and then avoiding hospital admission,” Dr. Bayés-Genís, who isn’t connected with the study, said in an interview.

The entirely noninvasive, smartphone-based app would be more appealing than implanted devices that, for example, measure thoracic bioimpedance or pulmonary artery pressure and are also intended as congestion early-warning systems, he proposed. “Its scalability makes it very attractive as well.”

But all that “would have to be validated in a large clinical trial,” Dr. Bayés-Genís, who comoderated the conference session featuring Dr. Abraham’s presentation, said when interviewed.

The ongoing study has enrolled 430 clinically stable adult patients with HF in New York Heart Association functional class II or III, regardless of left ventricular ejection fraction, who were cared for by teams at eight centers in Israel. At the outset, during a period of stability, each patient spoke a few sentences into the app to establish a vocal-pattern baseline.

Once home, their assignment was to speak the same sentences into their phones once a day. The app, working through a cloud-based, artificial intelligence–derived processing system, compared each day’s vocal signature with the baseline and alerted researchers when it detected signs of altered fluid status.

About 460,000 recordings were collected from the 180 patients in the current analysis, of whom about 27% were women. They used the app for a mean of 512 days.

The system seems to work well regardless of language or dialect, Dr. Abraham said. About 70% of the current study’s patients spoke Hebrew, and most of the rest spoke either Russian or Arabic.

Most patients (almost 80%) used the app at least 70% of the prescribed time. Only 14 patients used the app less than 60% of the time, he reported.

Dr. Bayés-Genís proposed that, in practice, unfamiliarity with or resistance to smartphone technology would be unlikely to figure greatly in any nonadherence with the daily app regimen, except “maybe for the eldest of the eldest.” The current cohort’s mean age was 70 years. In his experience, he said, most older persons younger than age 80 use a smartphone, at least in more developed countries.

Dr. Abraham disclosed serving on an advisory board for and receiving consulting fees from Cordio Medical; receiving consulting fees from Abbott, Boehringer Ingelheim, CVRx, Edwards Lifesciences, and Respicardia; receiving salary from V-Wave Medical; and receiving research support from the National Heart, Lung, and Blood Institute. Dr. Bayés-Genís reported receiving personal fees from AstraZeneca, Vifor-Fresenius, Novartis, Boehringer Ingelheim, Abbott, Roche Diagnostics, and Critical Diagnostics.

A version of this article first appeared on Medscape.com.

A voice can carry a long distance, but in patients with heart failure (HF) a voice can also carry otherwise hidden signs useful for predicting short-term risk for worsening disease, even acute decompensation. Potentially, it only has to reach a smartphone to do it, suggests a preliminary study of a mobile app designed to alert patients and clinicians to such looming HF events, if possible in time to avert them.

The proprietary app and analysis system (HearO, Cordio Medical), used daily at home by 180 patients with stable HF, demonstrated 82% accuracy in picking out vocal signals of early congestion that would soon be followed by a need for intensified therapy or acute decompensation.

Andrew D. Bowser/MDedge News

In practice, clinicians receiving the system’s alerts about altered fluid status would intervene with medication adjustments before the patient deteriorates and possibly heads for the ED. That would be the plan; there were no interventions in the current study, which was designed only to explore the strategy’s feasibility and accuracy.

The system could emerge as “a useful tool in remote monitoring of heart failure patients, providing early warning of worsening heart failure,” said William Abraham, MD, from Ohio State University Wexner Medical Center, Columbus. “It has the potential to reduce acute decompensated heart failure hospitalizations and improve patient quality of life and economic outcomes. But, of course, we have to show that now in larger and randomized clinical studies.”

Abraham presented the Cordio HearO Community Study preliminary results at the Heart Failure Association of the European Society of Cardiology sessions. It follows a recent small study that showed the same app could identify vocal signals linked to altered fluid status in patients with HF hospitalized with acute decompensation.

In the current study, researchers prospectively tracked any worsening HF events that hit patients within a month after the system sent them an alert suggesting early changes in fluid status. Then, they retrospectively assessed the strategy’s predictive accuracy for an initial episode.

The system correctly predicted 32 of 39 first HF events, for an 82% sensitivity and a false-positive rate of 18%. On an annualized basis, Dr. Abraham said, the patients experienced an estimated two to three false alarms per year, alerts that were not followed by HF events. For context, the standard practice of monitoring the patient’s weight “has a sensitivity of about 10%-20%. So this performs very well as a noninvasive technology.”

On average, Dr. Abraham said, “we were able to detect future events about 18 days prior to the worsening heart failure event,” which in practice would provide “a pretty broad window for intervention.”

The false positives were not a surprise. Lung fluid status can change in conditions other than heart failure, he observed, and the HearO system alerts aren’t meant to be followed blindly.

“I don’t know that we clearly understand what those false-positives represent just yet,” Dr. Abraham said. “The bottom line is, as with any diagnostic tool, you have to use the totality of clinical information you have available. If you get an alert and the patient has a fever and a cough, you might think of pneumonia before worsening heart failure.”

“The false positives don’t appear to be alarming,” agreed Antoni Bayés-Genís, MD, PhD, Hospital Universitari Germans Trias i Pujol, Badalona, Spain, and Universitat Autònoma de Barcelona.

The study suggests that the HearO system, combined with sound clinical judgment, “has the potential to identify early congestion that may allow for treatment management, and then avoiding hospital admission,” Dr. Bayés-Genís, who isn’t connected with the study, said in an interview.

The entirely noninvasive, smartphone-based app would be more appealing than implanted devices that, for example, measure thoracic bioimpedance or pulmonary artery pressure and are also intended as congestion early-warning systems, he proposed. “Its scalability makes it very attractive as well.”

But all that “would have to be validated in a large clinical trial,” Dr. Bayés-Genís, who comoderated the conference session featuring Dr. Abraham’s presentation, said when interviewed.

The ongoing study has enrolled 430 clinically stable adult patients with HF in New York Heart Association functional class II or III, regardless of left ventricular ejection fraction, who were cared for by teams at eight centers in Israel. At the outset, during a period of stability, each patient spoke a few sentences into the app to establish a vocal-pattern baseline.

Once home, their assignment was to speak the same sentences into their phones once a day. The app, working through a cloud-based, artificial intelligence–derived processing system, compared each day’s vocal signature with the baseline and alerted researchers when it detected signs of altered fluid status.

About 460,000 recordings were collected from the 180 patients in the current analysis, of whom about 27% were women. They used the app for a mean of 512 days.

The system seems to work well regardless of language or dialect, Dr. Abraham said. About 70% of the current study’s patients spoke Hebrew, and most of the rest spoke either Russian or Arabic.

Most patients (almost 80%) used the app at least 70% of the prescribed time. Only 14 patients used the app less than 60% of the time, he reported.

Dr. Bayés-Genís proposed that, in practice, unfamiliarity with or resistance to smartphone technology would be unlikely to figure greatly in any nonadherence with the daily app regimen, except “maybe for the eldest of the eldest.” The current cohort’s mean age was 70 years. In his experience, he said, most older persons younger than age 80 use a smartphone, at least in more developed countries.

Dr. Abraham disclosed serving on an advisory board for and receiving consulting fees from Cordio Medical; receiving consulting fees from Abbott, Boehringer Ingelheim, CVRx, Edwards Lifesciences, and Respicardia; receiving salary from V-Wave Medical; and receiving research support from the National Heart, Lung, and Blood Institute. Dr. Bayés-Genís reported receiving personal fees from AstraZeneca, Vifor-Fresenius, Novartis, Boehringer Ingelheim, Abbott, Roche Diagnostics, and Critical Diagnostics.

A version of this article first appeared on Medscape.com.

For the past 2 decades, catheter ablation stole most of the excitement in electrophysiology. Cardiac pacing was seen as necessary but boring. His-bundle pacing earned only modest attention. 

But at the annual scientific sessions of the Heart Rhythm Society, cardiac pacing consolidated its comeback and entered the super-cool category.

Not one but three late-breaking clinical trials considered the role of pacing the heart’s conduction system for both preventive and therapeutic purposes. Conduction system pacing, or CSP as we call it, includes pacing the His bundle or the left bundle branch. Left bundle–branch pacing has now largely replaced His-bundle pacing.

Before I tell you about the studies, let’s review why CSP disrupts the status quo.

The core idea goes back to basic physiology: After the impulse leaves the atrioventricular node, the heart’s specialized conduction system allows rapid and synchronous conduction to both the right and left ventricles.

Standard cardiac pacing means fixing a pacing lead into the muscle of the right ventricle. From that spot, conduction spreads via slower muscle-to-muscle conduction, which leads to a wide QRS complex and the right ventricle contracts before the left ventricle.

While such dyssynchronous contraction is better than no contraction, this approach leads to a pacing-induced cardiomyopathy in a substantial number of cases. (The incidence reported in many studies varies widely.)

The most disruptive effect of conduction system pacing is that it is a form of cardiac resynchronization therapy (CRT). And that is nifty because, until recently, resynchronizing the ventricles required placing two ventricular leads: one in the right ventricle and the other in the coronary sinus to pace the left ventricle.
 

Left bundle-branch pacing vs. biventricular pacing

The first of the three HRS studies is the LBBP-RESYNC randomized controlled trial led by Jiangang Zou, MD, PhD, and performed in multiple centers in China. It compared the efficacy of left bundle–branch pacing (LBBP) with that of conventional biventricular pacing in 40 patients with heart failure who were eligible for CRT. The primary endpoint was the change in left ventricular ejection fraction (LVEF) from baseline to 6-month follow-up.

The results favored LBBP. Although both pacing techniques improved LVEF from baseline, the between-group difference in LVEF was greater in the LBBP arm than the biventricular pacing arm by a statistically significant 5.6% (95% confidence interval, 0.3%-10.9%). Secondary endpoints, such as reductions in left ventricular end-systolic volume, N-terminal of the prohormone brain natriuretic peptide, and QRS duration, also favored LBBP.
 

Conduction system pacing vs. biventricular pacing

A second late-breaking study, from the Geisinger group, led by Pugazhendhi Vijayaraman, MD, was simultaneously published in Heart Rhythm.

This nonrandomized observational study compared nearly 500 patients eligible for CRT treated at two health systems. One group favors conduction system pacing and the other does traditional biventricular pacing, which set up a two-armed comparison.

CSP was accomplished by LBBP (65%) and His-bundle pacing (35%).

The primary endpoint of death or first hospitalization for heart failure occurred in 28.3% of patients in the CSP arm versus 38.4% of the biventricular arm (hazard ratio, 1.52; 95% CI, 1.08-2.09). QRS duration and LVEF also improved from baseline in both groups.
 

LBB area pacing as a bailout for failed CRT

The Geisinger group also presented and published an international multicenter study that assessed the feasibility of LBBP as a bailout when standard biventricular pacing did not work – because of inadequate coronary sinus anatomy or CRT nonresponse, defined as lack of clinical or echocardiographic improvement.

This series included 212 patients in whom CRT failed and who underwent attempted LBBP pacing. The bailout was successful in 200 patients (91%). The primary endpoint was defined as an increase in LVEF above 5% on echocardiography.

During 12-month follow-up, 61% of patients had an improvement in LVEF above 5% and nearly 30% had a “super-response,” defined as a 20% or greater increase or normalization of LVEF. Similar to the previous studies, LBBP resulted in shorter QRS duration and improved echocardiography parameters.
 

Am I persuaded?

I was an early adopter of His-bundle pacing. When successful, it delivered both aesthetically pleasing QRS complexes and clinical efficacy. But there were many challenges: it is technically difficult, and capture thresholds are often high at implant and get higher over time, which leads to shorter battery life.

Pacing the left bundle branch mitigates these challenges. Here, the operator approaches from the right side and screws the lead a few millimeters into the septum, so the tip of the lead can capture the left bundle or one of its branches. This allows activation of the heart’s specialized conduction system and thus synchronizes right and left ventricle contraction.

Although there is a learning curve, LBBP is technically easier than His-bundle pacing and ultimately results in far better pacing and sensing parameters. What’s more, the preferred lead for LBBP has a stellar efficacy record – over years.

Chormail/Dreamstime.com

The barriers to getting more CSP trials

The challenge going forward will be funding new trials. CSP stands to prevent pacing-induced cardiomyopathy and offer less costly alternatives to standard biventricular pacing for CRT. This is great for patients, but it would mean that fewer higher-cost CRT devices will be sold.

Heart rhythm research is largely industry-funded because in most cases better therapies for patients mean more profits for industry. In the case of CSP, there is no such confluence of interests.

Conduction system pacing has come about because of the efforts of a few tireless champions who not only published extensively but were also skilled at using social media to spread the excitement. Trials have been small and often self-funded.

The data presented at HRS provides enough equipoise to support a large outcomes-based randomized controlled trial. Imagine if our CSP champions were able to find public-funding sources for such future trials.

Now that would be super cool.

Dr. Mandrola practices cardiac electrophysiology in Louisville, Ky., and is a writer and podcaster for Medscape. He participates in clinical research and writes often about the state of medical evidence. He has disclosed no relevant financial relationships. A version of this article first appeared on Medscape.com.

For the past 2 decades, catheter ablation stole most of the excitement in electrophysiology. Cardiac pacing was seen as necessary but boring. His-bundle pacing earned only modest attention. 

But at the annual scientific sessions of the Heart Rhythm Society, cardiac pacing consolidated its comeback and entered the super-cool category.

Not one but three late-breaking clinical trials considered the role of pacing the heart’s conduction system for both preventive and therapeutic purposes. Conduction system pacing, or CSP as we call it, includes pacing the His bundle or the left bundle branch. Left bundle–branch pacing has now largely replaced His-bundle pacing.

Before I tell you about the studies, let’s review why CSP disrupts the status quo.

The core idea goes back to basic physiology: After the impulse leaves the atrioventricular node, the heart’s specialized conduction system allows rapid and synchronous conduction to both the right and left ventricles.

Standard cardiac pacing means fixing a pacing lead into the muscle of the right ventricle. From that spot, conduction spreads via slower muscle-to-muscle conduction, which leads to a wide QRS complex and the right ventricle contracts before the left ventricle.

While such dyssynchronous contraction is better than no contraction, this approach leads to a pacing-induced cardiomyopathy in a substantial number of cases. (The incidence reported in many studies varies widely.)

The most disruptive effect of conduction system pacing is that it is a form of cardiac resynchronization therapy (CRT). And that is nifty because, until recently, resynchronizing the ventricles required placing two ventricular leads: one in the right ventricle and the other in the coronary sinus to pace the left ventricle.
 

Left bundle-branch pacing vs. biventricular pacing

The first of the three HRS studies is the LBBP-RESYNC randomized controlled trial led by Jiangang Zou, MD, PhD, and performed in multiple centers in China. It compared the efficacy of left bundle–branch pacing (LBBP) with that of conventional biventricular pacing in 40 patients with heart failure who were eligible for CRT. The primary endpoint was the change in left ventricular ejection fraction (LVEF) from baseline to 6-month follow-up.

The results favored LBBP. Although both pacing techniques improved LVEF from baseline, the between-group difference in LVEF was greater in the LBBP arm than the biventricular pacing arm by a statistically significant 5.6% (95% confidence interval, 0.3%-10.9%). Secondary endpoints, such as reductions in left ventricular end-systolic volume, N-terminal of the prohormone brain natriuretic peptide, and QRS duration, also favored LBBP.
 

Conduction system pacing vs. biventricular pacing

A second late-breaking study, from the Geisinger group, led by Pugazhendhi Vijayaraman, MD, was simultaneously published in Heart Rhythm.

This nonrandomized observational study compared nearly 500 patients eligible for CRT treated at two health systems. One group favors conduction system pacing and the other does traditional biventricular pacing, which set up a two-armed comparison.

CSP was accomplished by LBBP (65%) and His-bundle pacing (35%).

The primary endpoint of death or first hospitalization for heart failure occurred in 28.3% of patients in the CSP arm versus 38.4% of the biventricular arm (hazard ratio, 1.52; 95% CI, 1.08-2.09). QRS duration and LVEF also improved from baseline in both groups.
 

LBB area pacing as a bailout for failed CRT

The Geisinger group also presented and published an international multicenter study that assessed the feasibility of LBBP as a bailout when standard biventricular pacing did not work – because of inadequate coronary sinus anatomy or CRT nonresponse, defined as lack of clinical or echocardiographic improvement.

This series included 212 patients in whom CRT failed and who underwent attempted LBBP pacing. The bailout was successful in 200 patients (91%). The primary endpoint was defined as an increase in LVEF above 5% on echocardiography.

During 12-month follow-up, 61% of patients had an improvement in LVEF above 5% and nearly 30% had a “super-response,” defined as a 20% or greater increase or normalization of LVEF. Similar to the previous studies, LBBP resulted in shorter QRS duration and improved echocardiography parameters.
 

Am I persuaded?

I was an early adopter of His-bundle pacing. When successful, it delivered both aesthetically pleasing QRS complexes and clinical efficacy. But there were many challenges: it is technically difficult, and capture thresholds are often high at implant and get higher over time, which leads to shorter battery life.

Pacing the left bundle branch mitigates these challenges. Here, the operator approaches from the right side and screws the lead a few millimeters into the septum, so the tip of the lead can capture the left bundle or one of its branches. This allows activation of the heart’s specialized conduction system and thus synchronizes right and left ventricle contraction.

Although there is a learning curve, LBBP is technically easier than His-bundle pacing and ultimately results in far better pacing and sensing parameters. What’s more, the preferred lead for LBBP has a stellar efficacy record – over years.

Chormail/Dreamstime.com

The barriers to getting more CSP trials

The challenge going forward will be funding new trials. CSP stands to prevent pacing-induced cardiomyopathy and offer less costly alternatives to standard biventricular pacing for CRT. This is great for patients, but it would mean that fewer higher-cost CRT devices will be sold.

Heart rhythm research is largely industry-funded because in most cases better therapies for patients mean more profits for industry. In the case of CSP, there is no such confluence of interests.

Conduction system pacing has come about because of the efforts of a few tireless champions who not only published extensively but were also skilled at using social media to spread the excitement. Trials have been small and often self-funded.

The data presented at HRS provides enough equipoise to support a large outcomes-based randomized controlled trial. Imagine if our CSP champions were able to find public-funding sources for such future trials.

Now that would be super cool.

Dr. Mandrola practices cardiac electrophysiology in Louisville, Ky., and is a writer and podcaster for Medscape. He participates in clinical research and writes often about the state of medical evidence. He has disclosed no relevant financial relationships. A version of this article first appeared on Medscape.com.

For the past 2 decades, catheter ablation stole most of the excitement in electrophysiology. Cardiac pacing was seen as necessary but boring. His-bundle pacing earned only modest attention. 

But at the annual scientific sessions of the Heart Rhythm Society, cardiac pacing consolidated its comeback and entered the super-cool category.

Not one but three late-breaking clinical trials considered the role of pacing the heart’s conduction system for both preventive and therapeutic purposes. Conduction system pacing, or CSP as we call it, includes pacing the His bundle or the left bundle branch. Left bundle–branch pacing has now largely replaced His-bundle pacing.

Before I tell you about the studies, let’s review why CSP disrupts the status quo.

The core idea goes back to basic physiology: After the impulse leaves the atrioventricular node, the heart’s specialized conduction system allows rapid and synchronous conduction to both the right and left ventricles.

Standard cardiac pacing means fixing a pacing lead into the muscle of the right ventricle. From that spot, conduction spreads via slower muscle-to-muscle conduction, which leads to a wide QRS complex and the right ventricle contracts before the left ventricle.

While such dyssynchronous contraction is better than no contraction, this approach leads to a pacing-induced cardiomyopathy in a substantial number of cases. (The incidence reported in many studies varies widely.)

The most disruptive effect of conduction system pacing is that it is a form of cardiac resynchronization therapy (CRT). And that is nifty because, until recently, resynchronizing the ventricles required placing two ventricular leads: one in the right ventricle and the other in the coronary sinus to pace the left ventricle.
 

Left bundle-branch pacing vs. biventricular pacing

The first of the three HRS studies is the LBBP-RESYNC randomized controlled trial led by Jiangang Zou, MD, PhD, and performed in multiple centers in China. It compared the efficacy of left bundle–branch pacing (LBBP) with that of conventional biventricular pacing in 40 patients with heart failure who were eligible for CRT. The primary endpoint was the change in left ventricular ejection fraction (LVEF) from baseline to 6-month follow-up.

The results favored LBBP. Although both pacing techniques improved LVEF from baseline, the between-group difference in LVEF was greater in the LBBP arm than the biventricular pacing arm by a statistically significant 5.6% (95% confidence interval, 0.3%-10.9%). Secondary endpoints, such as reductions in left ventricular end-systolic volume, N-terminal of the prohormone brain natriuretic peptide, and QRS duration, also favored LBBP.
 

Conduction system pacing vs. biventricular pacing

A second late-breaking study, from the Geisinger group, led by Pugazhendhi Vijayaraman, MD, was simultaneously published in Heart Rhythm.

This nonrandomized observational study compared nearly 500 patients eligible for CRT treated at two health systems. One group favors conduction system pacing and the other does traditional biventricular pacing, which set up a two-armed comparison.

CSP was accomplished by LBBP (65%) and His-bundle pacing (35%).

The primary endpoint of death or first hospitalization for heart failure occurred in 28.3% of patients in the CSP arm versus 38.4% of the biventricular arm (hazard ratio, 1.52; 95% CI, 1.08-2.09). QRS duration and LVEF also improved from baseline in both groups.
 

LBB area pacing as a bailout for failed CRT

The Geisinger group also presented and published an international multicenter study that assessed the feasibility of LBBP as a bailout when standard biventricular pacing did not work – because of inadequate coronary sinus anatomy or CRT nonresponse, defined as lack of clinical or echocardiographic improvement.

This series included 212 patients in whom CRT failed and who underwent attempted LBBP pacing. The bailout was successful in 200 patients (91%). The primary endpoint was defined as an increase in LVEF above 5% on echocardiography.

During 12-month follow-up, 61% of patients had an improvement in LVEF above 5% and nearly 30% had a “super-response,” defined as a 20% or greater increase or normalization of LVEF. Similar to the previous studies, LBBP resulted in shorter QRS duration and improved echocardiography parameters.
 

Am I persuaded?

I was an early adopter of His-bundle pacing. When successful, it delivered both aesthetically pleasing QRS complexes and clinical efficacy. But there were many challenges: it is technically difficult, and capture thresholds are often high at implant and get higher over time, which leads to shorter battery life.

Pacing the left bundle branch mitigates these challenges. Here, the operator approaches from the right side and screws the lead a few millimeters into the septum, so the tip of the lead can capture the left bundle or one of its branches. This allows activation of the heart’s specialized conduction system and thus synchronizes right and left ventricle contraction.

Although there is a learning curve, LBBP is technically easier than His-bundle pacing and ultimately results in far better pacing and sensing parameters. What’s more, the preferred lead for LBBP has a stellar efficacy record – over years.

Chormail/Dreamstime.com

The barriers to getting more CSP trials

The challenge going forward will be funding new trials. CSP stands to prevent pacing-induced cardiomyopathy and offer less costly alternatives to standard biventricular pacing for CRT. This is great for patients, but it would mean that fewer higher-cost CRT devices will be sold.

Heart rhythm research is largely industry-funded because in most cases better therapies for patients mean more profits for industry. In the case of CSP, there is no such confluence of interests.

Conduction system pacing has come about because of the efforts of a few tireless champions who not only published extensively but were also skilled at using social media to spread the excitement. Trials have been small and often self-funded.

The data presented at HRS provides enough equipoise to support a large outcomes-based randomized controlled trial. Imagine if our CSP champions were able to find public-funding sources for such future trials.

Now that would be super cool.

Dr. Mandrola practices cardiac electrophysiology in Louisville, Ky., and is a writer and podcaster for Medscape. He participates in clinical research and writes often about the state of medical evidence. He has disclosed no relevant financial relationships. A version of this article first appeared on Medscape.com.

Topline results from the phase 3 DELIVER trial show dapagliflozin (Farxiga) significantly reduced the primary endpoint of cardiovascular death or worsening heart failure in patients with mildly reduced or preserved ejection fraction, AstraZeneca announced today.

The sodium-glucose cotransporter 2 (SGLT2) inhibitor is not approved in this setting but is already approved for treatment of type 2 diabetes, chronic kidney disease, and heart failure with reduced ejection fraction.

“The results of DELIVER extend the benefit of dapagliflozin to the full spectrum of patients with heart failure,” principal investigator of the trial, Scott Solomon, MD, Harvard Medical School and Brigham and Women’s Hospital, Boston, said in the news release.

The safety and tolerability of dapagliflozin in the trial were consistent with its established safety profile, the company says.

The full trial results will be submitted for presentation at a forthcoming medical meeting, and regulatory submissions will be made in the coming months, it notes.

A version of this article first appeared on Medscape.com.

Topline results from the phase 3 DELIVER trial show dapagliflozin (Farxiga) significantly reduced the primary endpoint of cardiovascular death or worsening heart failure in patients with mildly reduced or preserved ejection fraction, AstraZeneca announced today.

The sodium-glucose cotransporter 2 (SGLT2) inhibitor is not approved in this setting but is already approved for treatment of type 2 diabetes, chronic kidney disease, and heart failure with reduced ejection fraction.

“The results of DELIVER extend the benefit of dapagliflozin to the full spectrum of patients with heart failure,” principal investigator of the trial, Scott Solomon, MD, Harvard Medical School and Brigham and Women’s Hospital, Boston, said in the news release.

The safety and tolerability of dapagliflozin in the trial were consistent with its established safety profile, the company says.

The full trial results will be submitted for presentation at a forthcoming medical meeting, and regulatory submissions will be made in the coming months, it notes.

A version of this article first appeared on Medscape.com.

Topline results from the phase 3 DELIVER trial show dapagliflozin (Farxiga) significantly reduced the primary endpoint of cardiovascular death or worsening heart failure in patients with mildly reduced or preserved ejection fraction, AstraZeneca announced today.

The sodium-glucose cotransporter 2 (SGLT2) inhibitor is not approved in this setting but is already approved for treatment of type 2 diabetes, chronic kidney disease, and heart failure with reduced ejection fraction.

“The results of DELIVER extend the benefit of dapagliflozin to the full spectrum of patients with heart failure,” principal investigator of the trial, Scott Solomon, MD, Harvard Medical School and Brigham and Women’s Hospital, Boston, said in the news release.

The safety and tolerability of dapagliflozin in the trial were consistent with its established safety profile, the company says.

The full trial results will be submitted for presentation at a forthcoming medical meeting, and regulatory submissions will be made in the coming months, it notes.

A version of this article first appeared on Medscape.com.