Heart Failure

Nirmatrelvir/ritonavir (Paxlovid) has been a game changer for high-risk patients with early COVID-19 symptoms but has significant interactions with commonly used cardiovascular medications, a new paper cautions.

COVID-19 patients with cardiovascular disease (CVD) or risk factors such as diabetes, hypertension, and chronic kidney disease are at high risk of severe disease and account for the lion’s share of those receiving Paxlovid. Data from the initial EPIC-HR trial and recent real-world data also suggest they’re among the most likely to benefit from the oral antiviral, regardless of their COVID-19 vaccination status.

ClaudioVentrella/Thinkstock

“But at the same time, it unfortunately interacts with many very commonly prescribed cardiovascular medications and with many of them in a very clinically meaningful way, which may lead to serious adverse consequences,” senior author Sarju Ganatra, MD, said in an interview. “So, while it’s being prescribed with a good intention to help these people, we may actually end up doing more harm than good.

“We don’t want to deter people from getting their necessary COVID-19 treatment, which is excellent for the most part these days as an outpatient,” he added. “So, we felt the need to make a comprehensive list of cardiac medications and level of interactions with Paxlovid and also to help the clinicians and prescribers at the point of care to make the clinical decision of what modifications they may need to do.”

The paper, published online in the Journal of the American College of Cardiology, details drug-drug interactions with some 80 CV medications including statins, antihypertensive agents, heart failure therapies, and antiplatelet/anticoagulants.

It also includes a color-coded figure denoting whether a drug is safe to coadminister with Paxlovid, may potentially interact and require a dose adjustment or temporary discontinuation, or is contraindicated.

Among the commonly used blood thinners, for example, the paper notes that Paxlovid significantly increases drug levels of the direct oral anticoagulants (DOACs) apixaban, rivaroxaban, edoxaban, and dabigatran and, thus, increases the risk of bleeding.

“It can still be administered, if it’s necessary, but the dose of the DOAC either needs to be reduced or held depending on what they are getting it for, whether they’re getting it for pulmonary embolism or atrial fibrillation, and we adjust for all those things in the table in the paper,” said Dr. Ganatra, from Lahey Hospital and Medical Center, Burlington, Mass.

When the DOAC can’t be interrupted or dose adjusted, however, Paxlovid should not be given, the experts said. The antiviral is safe to use with enoxaparin, a low-molecular-weight heparin, but can increase or decrease levels of warfarin and should be used with close international normalized ratio monitoring.

For patients on antiplatelet agents, clinicians are advised to avoid prescribing nirmatrelvir/ritonavir to those on ticagrelor or clopidogrel unless the agents can be replaced by prasugrel.

Ritonavir – an inhibitor of cytochrome P 450 enzymes, particularly CYP3A4 – poses an increased risk of bleeding when given with ticagrelor, a CYP3A4 substrate, and decreases the active metabolite of clopidogrel, cutting its platelet inhibition by 20%. Although there’s a twofold decrease in the maximum concentration of prasugrel in patients on ritonavir, this does not affect its antiplatelet activity, the paper explains.

Among the lipid-lowering agents, experts suggested temporarily withholding atorvastatin, rosuvastatin, simvastatin, and lovastatin because of an increased risk for myopathy and liver toxicity but say that other statins, fibrates, ezetimibe, and the proprotein convertase subtilisin/kexin type 9 inhibitors evolocumab and alirocumab are safe to coadminister with Paxlovid.

While statins typically leave the body within hours, most of the antiarrhythmic drugs, except for sotalol, are not safe to give with Paxlovid, Dr. Ganatra said. It’s technically not feasible to hold these drugs because most have long half-lives, reaching about 100 days, for example, for amiodarone.

“It’s going to hang around in your system for a long time, so you don’t want to be falsely reassured that you’re holding the drug and it’s going to be fine to go back slowly,” he said. “You need to look for alternative therapies in those scenarios for COVID-19 treatment, which could be other antivirals, or a monoclonal antibody individualized to the patient’s risk.”

Although there’s limited clinical information regarding interaction-related adverse events with Paxlovid, the team used pharmacokinetics and pharmacodynamics data to provide the guidance. Serious adverse events are also well documented for ritonavir, which has been prescribed for years to treat HIV, Dr. Ganatra noted.

The Infectious Disease Society of America also published guidance on the management of potential drug interactions with Paxlovid in May and, earlier in October, the Food and Drug Administration updated its Paxlovid patient eligibility screening checklist.

Still, most prescribers are actually primary care physicians and even pharmacists, who may not be completely attuned, said Dr. Ganatra, who noted that some centers have started programs to help connect primary care physicians with their cardiology colleagues to check on CV drugs in their COVID-19 patients.

“We need to be thinking more broadly and at a system level where the hospital or health care system leverages the electronic health record systems,” he said. “Most of them are sophisticated enough to incorporate simple drug-drug interaction information, so if you try to prescribe someone Paxlovid and it’s a heart transplant patient who is on immunosuppressive therapy or a patient on a blood thinner, then it should give you a warning ... or at least give them a link to our paper or other valuable resources.

“If someone is on a blood thinner and the blood thinner level goes up by ninefold, we can only imagine what we would be dealing with,” Dr. Ganatra said. “So, these interactions should be taken very seriously and I think it’s worth the time and investment.”

The authors reported no relevant financial relationships.

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

Nirmatrelvir/ritonavir (Paxlovid) has been a game changer for high-risk patients with early COVID-19 symptoms but has significant interactions with commonly used cardiovascular medications, a new paper cautions.

COVID-19 patients with cardiovascular disease (CVD) or risk factors such as diabetes, hypertension, and chronic kidney disease are at high risk of severe disease and account for the lion’s share of those receiving Paxlovid. Data from the initial EPIC-HR trial and recent real-world data also suggest they’re among the most likely to benefit from the oral antiviral, regardless of their COVID-19 vaccination status.

ClaudioVentrella/Thinkstock

“But at the same time, it unfortunately interacts with many very commonly prescribed cardiovascular medications and with many of them in a very clinically meaningful way, which may lead to serious adverse consequences,” senior author Sarju Ganatra, MD, said in an interview. “So, while it’s being prescribed with a good intention to help these people, we may actually end up doing more harm than good.

“We don’t want to deter people from getting their necessary COVID-19 treatment, which is excellent for the most part these days as an outpatient,” he added. “So, we felt the need to make a comprehensive list of cardiac medications and level of interactions with Paxlovid and also to help the clinicians and prescribers at the point of care to make the clinical decision of what modifications they may need to do.”

The paper, published online in the Journal of the American College of Cardiology, details drug-drug interactions with some 80 CV medications including statins, antihypertensive agents, heart failure therapies, and antiplatelet/anticoagulants.

It also includes a color-coded figure denoting whether a drug is safe to coadminister with Paxlovid, may potentially interact and require a dose adjustment or temporary discontinuation, or is contraindicated.

Among the commonly used blood thinners, for example, the paper notes that Paxlovid significantly increases drug levels of the direct oral anticoagulants (DOACs) apixaban, rivaroxaban, edoxaban, and dabigatran and, thus, increases the risk of bleeding.

“It can still be administered, if it’s necessary, but the dose of the DOAC either needs to be reduced or held depending on what they are getting it for, whether they’re getting it for pulmonary embolism or atrial fibrillation, and we adjust for all those things in the table in the paper,” said Dr. Ganatra, from Lahey Hospital and Medical Center, Burlington, Mass.

When the DOAC can’t be interrupted or dose adjusted, however, Paxlovid should not be given, the experts said. The antiviral is safe to use with enoxaparin, a low-molecular-weight heparin, but can increase or decrease levels of warfarin and should be used with close international normalized ratio monitoring.

For patients on antiplatelet agents, clinicians are advised to avoid prescribing nirmatrelvir/ritonavir to those on ticagrelor or clopidogrel unless the agents can be replaced by prasugrel.

Ritonavir – an inhibitor of cytochrome P 450 enzymes, particularly CYP3A4 – poses an increased risk of bleeding when given with ticagrelor, a CYP3A4 substrate, and decreases the active metabolite of clopidogrel, cutting its platelet inhibition by 20%. Although there’s a twofold decrease in the maximum concentration of prasugrel in patients on ritonavir, this does not affect its antiplatelet activity, the paper explains.

Among the lipid-lowering agents, experts suggested temporarily withholding atorvastatin, rosuvastatin, simvastatin, and lovastatin because of an increased risk for myopathy and liver toxicity but say that other statins, fibrates, ezetimibe, and the proprotein convertase subtilisin/kexin type 9 inhibitors evolocumab and alirocumab are safe to coadminister with Paxlovid.

While statins typically leave the body within hours, most of the antiarrhythmic drugs, except for sotalol, are not safe to give with Paxlovid, Dr. Ganatra said. It’s technically not feasible to hold these drugs because most have long half-lives, reaching about 100 days, for example, for amiodarone.

“It’s going to hang around in your system for a long time, so you don’t want to be falsely reassured that you’re holding the drug and it’s going to be fine to go back slowly,” he said. “You need to look for alternative therapies in those scenarios for COVID-19 treatment, which could be other antivirals, or a monoclonal antibody individualized to the patient’s risk.”

Although there’s limited clinical information regarding interaction-related adverse events with Paxlovid, the team used pharmacokinetics and pharmacodynamics data to provide the guidance. Serious adverse events are also well documented for ritonavir, which has been prescribed for years to treat HIV, Dr. Ganatra noted.

The Infectious Disease Society of America also published guidance on the management of potential drug interactions with Paxlovid in May and, earlier in October, the Food and Drug Administration updated its Paxlovid patient eligibility screening checklist.

Still, most prescribers are actually primary care physicians and even pharmacists, who may not be completely attuned, said Dr. Ganatra, who noted that some centers have started programs to help connect primary care physicians with their cardiology colleagues to check on CV drugs in their COVID-19 patients.

“We need to be thinking more broadly and at a system level where the hospital or health care system leverages the electronic health record systems,” he said. “Most of them are sophisticated enough to incorporate simple drug-drug interaction information, so if you try to prescribe someone Paxlovid and it’s a heart transplant patient who is on immunosuppressive therapy or a patient on a blood thinner, then it should give you a warning ... or at least give them a link to our paper or other valuable resources.

“If someone is on a blood thinner and the blood thinner level goes up by ninefold, we can only imagine what we would be dealing with,” Dr. Ganatra said. “So, these interactions should be taken very seriously and I think it’s worth the time and investment.”

The authors reported no relevant financial relationships.

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

Nirmatrelvir/ritonavir (Paxlovid) has been a game changer for high-risk patients with early COVID-19 symptoms but has significant interactions with commonly used cardiovascular medications, a new paper cautions.

COVID-19 patients with cardiovascular disease (CVD) or risk factors such as diabetes, hypertension, and chronic kidney disease are at high risk of severe disease and account for the lion’s share of those receiving Paxlovid. Data from the initial EPIC-HR trial and recent real-world data also suggest they’re among the most likely to benefit from the oral antiviral, regardless of their COVID-19 vaccination status.

ClaudioVentrella/Thinkstock

“But at the same time, it unfortunately interacts with many very commonly prescribed cardiovascular medications and with many of them in a very clinically meaningful way, which may lead to serious adverse consequences,” senior author Sarju Ganatra, MD, said in an interview. “So, while it’s being prescribed with a good intention to help these people, we may actually end up doing more harm than good.

“We don’t want to deter people from getting their necessary COVID-19 treatment, which is excellent for the most part these days as an outpatient,” he added. “So, we felt the need to make a comprehensive list of cardiac medications and level of interactions with Paxlovid and also to help the clinicians and prescribers at the point of care to make the clinical decision of what modifications they may need to do.”

The paper, published online in the Journal of the American College of Cardiology, details drug-drug interactions with some 80 CV medications including statins, antihypertensive agents, heart failure therapies, and antiplatelet/anticoagulants.

It also includes a color-coded figure denoting whether a drug is safe to coadminister with Paxlovid, may potentially interact and require a dose adjustment or temporary discontinuation, or is contraindicated.

Among the commonly used blood thinners, for example, the paper notes that Paxlovid significantly increases drug levels of the direct oral anticoagulants (DOACs) apixaban, rivaroxaban, edoxaban, and dabigatran and, thus, increases the risk of bleeding.

“It can still be administered, if it’s necessary, but the dose of the DOAC either needs to be reduced or held depending on what they are getting it for, whether they’re getting it for pulmonary embolism or atrial fibrillation, and we adjust for all those things in the table in the paper,” said Dr. Ganatra, from Lahey Hospital and Medical Center, Burlington, Mass.

When the DOAC can’t be interrupted or dose adjusted, however, Paxlovid should not be given, the experts said. The antiviral is safe to use with enoxaparin, a low-molecular-weight heparin, but can increase or decrease levels of warfarin and should be used with close international normalized ratio monitoring.

For patients on antiplatelet agents, clinicians are advised to avoid prescribing nirmatrelvir/ritonavir to those on ticagrelor or clopidogrel unless the agents can be replaced by prasugrel.

Ritonavir – an inhibitor of cytochrome P 450 enzymes, particularly CYP3A4 – poses an increased risk of bleeding when given with ticagrelor, a CYP3A4 substrate, and decreases the active metabolite of clopidogrel, cutting its platelet inhibition by 20%. Although there’s a twofold decrease in the maximum concentration of prasugrel in patients on ritonavir, this does not affect its antiplatelet activity, the paper explains.

Among the lipid-lowering agents, experts suggested temporarily withholding atorvastatin, rosuvastatin, simvastatin, and lovastatin because of an increased risk for myopathy and liver toxicity but say that other statins, fibrates, ezetimibe, and the proprotein convertase subtilisin/kexin type 9 inhibitors evolocumab and alirocumab are safe to coadminister with Paxlovid.

While statins typically leave the body within hours, most of the antiarrhythmic drugs, except for sotalol, are not safe to give with Paxlovid, Dr. Ganatra said. It’s technically not feasible to hold these drugs because most have long half-lives, reaching about 100 days, for example, for amiodarone.

“It’s going to hang around in your system for a long time, so you don’t want to be falsely reassured that you’re holding the drug and it’s going to be fine to go back slowly,” he said. “You need to look for alternative therapies in those scenarios for COVID-19 treatment, which could be other antivirals, or a monoclonal antibody individualized to the patient’s risk.”

Although there’s limited clinical information regarding interaction-related adverse events with Paxlovid, the team used pharmacokinetics and pharmacodynamics data to provide the guidance. Serious adverse events are also well documented for ritonavir, which has been prescribed for years to treat HIV, Dr. Ganatra noted.

The Infectious Disease Society of America also published guidance on the management of potential drug interactions with Paxlovid in May and, earlier in October, the Food and Drug Administration updated its Paxlovid patient eligibility screening checklist.

Still, most prescribers are actually primary care physicians and even pharmacists, who may not be completely attuned, said Dr. Ganatra, who noted that some centers have started programs to help connect primary care physicians with their cardiology colleagues to check on CV drugs in their COVID-19 patients.

“We need to be thinking more broadly and at a system level where the hospital or health care system leverages the electronic health record systems,” he said. “Most of them are sophisticated enough to incorporate simple drug-drug interaction information, so if you try to prescribe someone Paxlovid and it’s a heart transplant patient who is on immunosuppressive therapy or a patient on a blood thinner, then it should give you a warning ... or at least give them a link to our paper or other valuable resources.

“If someone is on a blood thinner and the blood thinner level goes up by ninefold, we can only imagine what we would be dealing with,” Dr. Ganatra said. “So, these interactions should be taken very seriously and I think it’s worth the time and investment.”

The authors reported no relevant financial relationships.

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

Cardiac biomarkers vary according to sex hormones in healthy transgender adults, just as in cisgender individuals, a new cross-sectional study suggests.

Previous research in the general population has shown that females have a lower 99th percentile upper reference limit for high-sensitivity cardiac troponin (hs-cTn) than males, whereas N-terminal prohormone brain natriuretic peptide (NT-proBNP) concentrations are higher in females than males across all ages after puberty.

“That trend is similar for people that have been on gender-affirming hormones, saying that sex hormones are playing a role in how cardiac turnover happens in a healthy state,” study author Dina M. Greene, PhD, University of Washington, Seattle, said in an interview.

Although the number of transgender people seeking gender-affirming care is increasing, studies are limited and largely retrospective cohorts, she noted. The scientific literature evaluating and defining cardiac biomarker concentrations is “currently absent.”

The American Heart Association’s recent scientific statement on the cardiovascular health of transgender and gender diverse (TGD) people says mounting evidence points to worse CV health in TGD people and that part of this excess risk is driven by significant psychosocial stressors across the lifespan. “In addition, the use of gender-affirming hormone therapy may be associated with cardiometabolic changes, but health research in this area remains limited and, at times, contradictory.”

For the present study, Dr. Greene and colleagues reached out to LGBTQ-oriented primary care and internal medicine clinics in Seattle and Iowa City to recruit 79 transgender men prescribed testosterone (mean age, 28.8 years) and 93 transgender women (mean age, 35.1 years) prescribed estradiol for at least 12 months. The mean duration of hormone therapy was 4.8 and 3.5 years, respectively.

The median estradiol concentration was 51 pg/mL in transgender men and 207 pg/mL in transgender women. Median testosterone concentrations were 4.6 ng/mL and 0.4 ng/mL, respectively.

The cardiac biomarkers were measured with the ARCHITECT STAT (Abbott Diagnostics) and ACCESS (Beckman Coulter) high-sensitivity troponin I assays, the Elecsys Troponin T Gen 5 STAT assay (Roche Diagnostics), and the Elecsys ProBNP II immunoassay (Roche Diagnostics).

As reported in JAMA Cardiology, the median hs-cTnI level on the ARCHITECT STAT assay was 0.9 ng/L (range, 0.6-1.7) in transgender men and 0.6 ng/L (range, 0.3-1.0) in transgender women. The pattern was consistent across the two other assays.

In contrast, the median NT-proBNP level was 17 ng/L (range, 13-27) in transgender men and 49 ng/L (range, 32-86) in transgender women.

“It seems that sex hormone concentration is a stronger driver of baseline cardiac troponin and NT-proBNP concentrations relative to sex assigned at birth,” Dr. Greene said.

The observed differences in hs-cTn concentrations “are likely physiological and not pathological,” given that concentrations between healthy cisgender people are also apparent and not thought to portend adverse events, the authors noted.

Teasing out the clinical implications of sex-specific hs-cTn upper reference limits for ruling in acute myocardial infarction (MI), however, is complicated by biological and social factors that contribute to poorer outcomes in women, despite lower baseline levels, they added. “Ultimately, the psychosocial benefits of gender-affirming hormones are substantial, and informed consent is likely the ideal method to balance the undetermined risks.”

Dr. Greene pointed out that the study wasn’t powered to accurately calculate gender-specific hs-cTn 99th percentiles or reference intervals for NT-proBNP and assessed the biomarkers at a single time point.

For the transgender person presenting with chest pain, she said, the clinical implications are not yet known, but the data suggest that when sex-specific 99th percentiles for hs-cTn are used, the numeric value associated with the affirmed gender, rather than the sex assigned at birth, may be the appropriate URL.

“It really depends on what the triage pathway is and if that pathway has differences for people of different sexes and how often people get serial measurements,” Dr. Greene said. “Within this population, it’s very important to look at those serial measurements because for people that are not cismen, those 99th percentiles when they’re non–sex specific, are going to favor in detection of a heart attack. So, you need to look at the second value to make sure there hasn’t been a change over time.”

The observed differences in the distribution of NT-proBNP concentrations is similar to that in the cisgender population, Dr. Greene noted. But these differences do not lead to sex-specific diagnostic thresholds because of the significant elevations present in overt heart failure and cardiovascular disease. “For NT-proBNP, it’s not as important. People don’t usually have a little bit of heart failure, they have heart failure, where people have small MIs.”

Dr. Greene said she would like to see larger trials looking at biomarker measurements and cardiac imaging before hormone therapy but that the biggest issue is the need for inclusion of transgender people in all cardiovascular trials.

“The sample sizes are never going to be as big as we get for cisgender people for a number of reasons but ensuring that it’s something that’s being asked on intake and monitored over time so we can understand how transgender people fit into the general population for cardiac disease,” Dr. Greene said. “And so, we can normalize that they exist. I keep driving this point home, but this is the biggest thing right now when it’s such a political issue.”

The study was supported in part by the department of laboratory medicine at the University of Washington, the department of pathology at the University of Iowa, and a grant from Abbott Diagnostics for in-kind high-sensitivity cardiac troponin I reagent. One coauthor reported financial relationships with Siemens Healthineers, Roche Diagnostics, Beckman Coulter, Becton, Dickinson, Abbott Diagnostics, Quidel Diagnostics, Sphingotech, and PixCell Medical. No other disclosures were reported.

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

Cardiac biomarkers vary according to sex hormones in healthy transgender adults, just as in cisgender individuals, a new cross-sectional study suggests.

Previous research in the general population has shown that females have a lower 99th percentile upper reference limit for high-sensitivity cardiac troponin (hs-cTn) than males, whereas N-terminal prohormone brain natriuretic peptide (NT-proBNP) concentrations are higher in females than males across all ages after puberty.

“That trend is similar for people that have been on gender-affirming hormones, saying that sex hormones are playing a role in how cardiac turnover happens in a healthy state,” study author Dina M. Greene, PhD, University of Washington, Seattle, said in an interview.

Although the number of transgender people seeking gender-affirming care is increasing, studies are limited and largely retrospective cohorts, she noted. The scientific literature evaluating and defining cardiac biomarker concentrations is “currently absent.”

The American Heart Association’s recent scientific statement on the cardiovascular health of transgender and gender diverse (TGD) people says mounting evidence points to worse CV health in TGD people and that part of this excess risk is driven by significant psychosocial stressors across the lifespan. “In addition, the use of gender-affirming hormone therapy may be associated with cardiometabolic changes, but health research in this area remains limited and, at times, contradictory.”

For the present study, Dr. Greene and colleagues reached out to LGBTQ-oriented primary care and internal medicine clinics in Seattle and Iowa City to recruit 79 transgender men prescribed testosterone (mean age, 28.8 years) and 93 transgender women (mean age, 35.1 years) prescribed estradiol for at least 12 months. The mean duration of hormone therapy was 4.8 and 3.5 years, respectively.

The median estradiol concentration was 51 pg/mL in transgender men and 207 pg/mL in transgender women. Median testosterone concentrations were 4.6 ng/mL and 0.4 ng/mL, respectively.

The cardiac biomarkers were measured with the ARCHITECT STAT (Abbott Diagnostics) and ACCESS (Beckman Coulter) high-sensitivity troponin I assays, the Elecsys Troponin T Gen 5 STAT assay (Roche Diagnostics), and the Elecsys ProBNP II immunoassay (Roche Diagnostics).

As reported in JAMA Cardiology, the median hs-cTnI level on the ARCHITECT STAT assay was 0.9 ng/L (range, 0.6-1.7) in transgender men and 0.6 ng/L (range, 0.3-1.0) in transgender women. The pattern was consistent across the two other assays.

In contrast, the median NT-proBNP level was 17 ng/L (range, 13-27) in transgender men and 49 ng/L (range, 32-86) in transgender women.

“It seems that sex hormone concentration is a stronger driver of baseline cardiac troponin and NT-proBNP concentrations relative to sex assigned at birth,” Dr. Greene said.

The observed differences in hs-cTn concentrations “are likely physiological and not pathological,” given that concentrations between healthy cisgender people are also apparent and not thought to portend adverse events, the authors noted.

Teasing out the clinical implications of sex-specific hs-cTn upper reference limits for ruling in acute myocardial infarction (MI), however, is complicated by biological and social factors that contribute to poorer outcomes in women, despite lower baseline levels, they added. “Ultimately, the psychosocial benefits of gender-affirming hormones are substantial, and informed consent is likely the ideal method to balance the undetermined risks.”

Dr. Greene pointed out that the study wasn’t powered to accurately calculate gender-specific hs-cTn 99th percentiles or reference intervals for NT-proBNP and assessed the biomarkers at a single time point.

For the transgender person presenting with chest pain, she said, the clinical implications are not yet known, but the data suggest that when sex-specific 99th percentiles for hs-cTn are used, the numeric value associated with the affirmed gender, rather than the sex assigned at birth, may be the appropriate URL.

“It really depends on what the triage pathway is and if that pathway has differences for people of different sexes and how often people get serial measurements,” Dr. Greene said. “Within this population, it’s very important to look at those serial measurements because for people that are not cismen, those 99th percentiles when they’re non–sex specific, are going to favor in detection of a heart attack. So, you need to look at the second value to make sure there hasn’t been a change over time.”

The observed differences in the distribution of NT-proBNP concentrations is similar to that in the cisgender population, Dr. Greene noted. But these differences do not lead to sex-specific diagnostic thresholds because of the significant elevations present in overt heart failure and cardiovascular disease. “For NT-proBNP, it’s not as important. People don’t usually have a little bit of heart failure, they have heart failure, where people have small MIs.”

Dr. Greene said she would like to see larger trials looking at biomarker measurements and cardiac imaging before hormone therapy but that the biggest issue is the need for inclusion of transgender people in all cardiovascular trials.

“The sample sizes are never going to be as big as we get for cisgender people for a number of reasons but ensuring that it’s something that’s being asked on intake and monitored over time so we can understand how transgender people fit into the general population for cardiac disease,” Dr. Greene said. “And so, we can normalize that they exist. I keep driving this point home, but this is the biggest thing right now when it’s such a political issue.”

The study was supported in part by the department of laboratory medicine at the University of Washington, the department of pathology at the University of Iowa, and a grant from Abbott Diagnostics for in-kind high-sensitivity cardiac troponin I reagent. One coauthor reported financial relationships with Siemens Healthineers, Roche Diagnostics, Beckman Coulter, Becton, Dickinson, Abbott Diagnostics, Quidel Diagnostics, Sphingotech, and PixCell Medical. No other disclosures were reported.

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

Cardiac biomarkers vary according to sex hormones in healthy transgender adults, just as in cisgender individuals, a new cross-sectional study suggests.

Previous research in the general population has shown that females have a lower 99th percentile upper reference limit for high-sensitivity cardiac troponin (hs-cTn) than males, whereas N-terminal prohormone brain natriuretic peptide (NT-proBNP) concentrations are higher in females than males across all ages after puberty.

“That trend is similar for people that have been on gender-affirming hormones, saying that sex hormones are playing a role in how cardiac turnover happens in a healthy state,” study author Dina M. Greene, PhD, University of Washington, Seattle, said in an interview.

Although the number of transgender people seeking gender-affirming care is increasing, studies are limited and largely retrospective cohorts, she noted. The scientific literature evaluating and defining cardiac biomarker concentrations is “currently absent.”

The American Heart Association’s recent scientific statement on the cardiovascular health of transgender and gender diverse (TGD) people says mounting evidence points to worse CV health in TGD people and that part of this excess risk is driven by significant psychosocial stressors across the lifespan. “In addition, the use of gender-affirming hormone therapy may be associated with cardiometabolic changes, but health research in this area remains limited and, at times, contradictory.”

For the present study, Dr. Greene and colleagues reached out to LGBTQ-oriented primary care and internal medicine clinics in Seattle and Iowa City to recruit 79 transgender men prescribed testosterone (mean age, 28.8 years) and 93 transgender women (mean age, 35.1 years) prescribed estradiol for at least 12 months. The mean duration of hormone therapy was 4.8 and 3.5 years, respectively.

The median estradiol concentration was 51 pg/mL in transgender men and 207 pg/mL in transgender women. Median testosterone concentrations were 4.6 ng/mL and 0.4 ng/mL, respectively.

The cardiac biomarkers were measured with the ARCHITECT STAT (Abbott Diagnostics) and ACCESS (Beckman Coulter) high-sensitivity troponin I assays, the Elecsys Troponin T Gen 5 STAT assay (Roche Diagnostics), and the Elecsys ProBNP II immunoassay (Roche Diagnostics).

As reported in JAMA Cardiology, the median hs-cTnI level on the ARCHITECT STAT assay was 0.9 ng/L (range, 0.6-1.7) in transgender men and 0.6 ng/L (range, 0.3-1.0) in transgender women. The pattern was consistent across the two other assays.

In contrast, the median NT-proBNP level was 17 ng/L (range, 13-27) in transgender men and 49 ng/L (range, 32-86) in transgender women.

“It seems that sex hormone concentration is a stronger driver of baseline cardiac troponin and NT-proBNP concentrations relative to sex assigned at birth,” Dr. Greene said.

The observed differences in hs-cTn concentrations “are likely physiological and not pathological,” given that concentrations between healthy cisgender people are also apparent and not thought to portend adverse events, the authors noted.

Teasing out the clinical implications of sex-specific hs-cTn upper reference limits for ruling in acute myocardial infarction (MI), however, is complicated by biological and social factors that contribute to poorer outcomes in women, despite lower baseline levels, they added. “Ultimately, the psychosocial benefits of gender-affirming hormones are substantial, and informed consent is likely the ideal method to balance the undetermined risks.”

Dr. Greene pointed out that the study wasn’t powered to accurately calculate gender-specific hs-cTn 99th percentiles or reference intervals for NT-proBNP and assessed the biomarkers at a single time point.

For the transgender person presenting with chest pain, she said, the clinical implications are not yet known, but the data suggest that when sex-specific 99th percentiles for hs-cTn are used, the numeric value associated with the affirmed gender, rather than the sex assigned at birth, may be the appropriate URL.

“It really depends on what the triage pathway is and if that pathway has differences for people of different sexes and how often people get serial measurements,” Dr. Greene said. “Within this population, it’s very important to look at those serial measurements because for people that are not cismen, those 99th percentiles when they’re non–sex specific, are going to favor in detection of a heart attack. So, you need to look at the second value to make sure there hasn’t been a change over time.”

The observed differences in the distribution of NT-proBNP concentrations is similar to that in the cisgender population, Dr. Greene noted. But these differences do not lead to sex-specific diagnostic thresholds because of the significant elevations present in overt heart failure and cardiovascular disease. “For NT-proBNP, it’s not as important. People don’t usually have a little bit of heart failure, they have heart failure, where people have small MIs.”

Dr. Greene said she would like to see larger trials looking at biomarker measurements and cardiac imaging before hormone therapy but that the biggest issue is the need for inclusion of transgender people in all cardiovascular trials.

“The sample sizes are never going to be as big as we get for cisgender people for a number of reasons but ensuring that it’s something that’s being asked on intake and monitored over time so we can understand how transgender people fit into the general population for cardiac disease,” Dr. Greene said. “And so, we can normalize that they exist. I keep driving this point home, but this is the biggest thing right now when it’s such a political issue.”

The study was supported in part by the department of laboratory medicine at the University of Washington, the department of pathology at the University of Iowa, and a grant from Abbott Diagnostics for in-kind high-sensitivity cardiac troponin I reagent. One coauthor reported financial relationships with Siemens Healthineers, Roche Diagnostics, Beckman Coulter, Becton, Dickinson, Abbott Diagnostics, Quidel Diagnostics, Sphingotech, and PixCell Medical. No other disclosures were reported.

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

A new statement from the American College of Cardiology is calling for a greater degree of career flexibility in the specialty to promote cardiologists’ personal and professional well-being and preserve excellence in patient care.

The statement recommends that cardiologists, from trainees to those contemplating retirement, be granted more leeway in their careers to allow them to take time for common life events, such as child-rearing, taking care of aged parents, or reducing their workload in case of poor health or physical disabilities, without jeopardizing their careers.

The “2022 ACC Health Policy Statement on Career Flexibility in Cardiology: A Report of the American College of Cardiology Solution Set Oversight Committee” was published online in the Journal of the American College of Cardiology.
 

‘Hard-driving profession’

The well-being of the cardiovascular workforce is critical to the achievement of the mission of the ACC, which is to transform cardiovascular care and improve heart health, the Health Policy writing committee stated. Career flexibility is an important component of ensuring that well-being, the authors wrote.

“The ACC has critically looked at the factors that contribute to the lack of diversity and inclusion in cardiovascular practice, and one of the issues is the lack of flexibility in our profession,” writing committee chair, Mary Norine Walsh, MD, medical director of the heart failure and cardiac transplantation programs, Ascension St. Vincent Heart Center, Indianapolis, Ind., told this news organization.

The notion of work-life balance has become increasingly important but cardiology as a profession has traditionally not been open to the idea of its value, Dr. Walsh said.

“We have a very hard-driving profession. It takes many years to train to do the work we do. The need for on-call services is very significant, and we go along because we have always done it this way, but if you don’t reexamine the way that you are structuring your work, you’ll never change it,” she said.

“For example, the ‘full time, full call, come to work after you’ve been up all night’ work ethic, which is no longer allowed for trainees, is still in effect once you get into university practice or clinical practice. We have interventional cardiologists up all night doing STEMI care for patients and then having a full clinic the next day,” Dr. Walsh said. “The changes that came about for trainees have not trickled up to the faculty or clinical practice level. It’s really a patient safety issue.”

She emphasized that the new policy statement is not focused solely on women. “The need for time away or flexible time around family planning, childbirth, and parental leave is increasingly important to our younger colleagues, both men and women.”

Dr. Walsh pointed out that the writing committee was carefully composed to include representation from all stakeholders.

“We have representation from very young cardiologists, one of whom was in training at the time we began our work. We have two systems CEOs who are cardiologists, we have a chair of medicine, we have two very senior cardiologists, and someone who works in industry,” she said.

The ACC also believes that cardiologists with physically demanding roles should have pathways to transition into other opportunities in patient care, research, or education.

“Right now, there are many cardiology practices that have traditional policies, where you are either all in, or you are all out. They do not allow for what we term a ‘step down’ policy, where you perhaps stop going into the cath lab, but you still do clinic and see patients,” Dr. Walsh noted.

“One of the goals of this policy statement is to allow for such practices to look at their compensation and structure, and to realize that their most senior cardiologists may be willing to stay on for several more years and be contributing members to the practice, but they may no longer wish to stay in the cath lab or be in the night call pool,” she said.

Transparency around compensation is also very important because cardiologists contemplating a reduced work schedule need to know how this will affect the amount of money they will be earning, she added.

“Transparency about policies around compensation are crucial because if an individual cardiologist wishes to pursue a flexible scheduling at any time in their career, it’s clear that they won’t have the same compensation as someone who is a full-time employee. All of this has to be very transparent and clear on both sides, so that the person deciding toward some flexibility understands what the implications are from a financial and compensation standpoint,” Dr. Walsh said.

As an example, a senior career cardiologist who no longer wants to take night calls should know what this may cost financially.

“The practice should set a valuation of night calls, so that the individual who makes the choice to step out of the call pool understands what the impact on their compensation will be. That type of transparency is necessary for all to ensure that individuals who seek flexibility will not be blindsided by the resulting decrease in financial compensation,” she said.
 

A growing need

“In its new health policy statement, the American College of Cardiology addresses the growing need for career flexibility as an important component of ensuring the well-being of the cardiovascular care workforce,” Harlan M. Krumholz, MD, SM, Harold H. Hines Jr. Professor of Medicine and professor in the Institute for Social and Policy Studies at Yale University, New Haven, Conn., told this news organization.

Courtesy Yale University

“The writing committee reviews opportunities for offering flexibility at all career levels to combat burnout and increase retention in the field, as well as proposes system, policy, and practice solutions to allow both men and women to emphasize and embrace work-life balance,” Dr. Krumholz said.

“The document provides pathways for cardiologists looking to pursue other interests or career transitions while maintaining excellence in clinical care,” he added. “Chief among these recommendations are flexible/part-time hours, leave and reentry policies, changes in job descriptions to support overarching cultural change, and equitable compensation and opportunities. The document is intended to be used as a guide for innovation in the cardiology workforce.”
 

‘Thoughtful and long overdue’

“This policy statement is thoughtful and long overdue,” Steven E. Nissen, MD, Lewis and Patricia Dickey Chair in Cardiovascular Medicine and professor of medicine at Cleveland Clinic, told this news organization.

“Career flexibility will allow cardiologists to fulfill family responsibilities while continuing to advance their careers. Successfully contributing to patient care and research does not require physicians to isolate themselves from all their other responsibilities,” Dr. Nissen added.

“I am pleased that the ACC has articulated the value of a balanced approach to career and family.”

Dr. Walsh, Dr. Krumholz, and Dr. Nissen report no relevant financial relationships.

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

A new statement from the American College of Cardiology is calling for a greater degree of career flexibility in the specialty to promote cardiologists’ personal and professional well-being and preserve excellence in patient care.

The statement recommends that cardiologists, from trainees to those contemplating retirement, be granted more leeway in their careers to allow them to take time for common life events, such as child-rearing, taking care of aged parents, or reducing their workload in case of poor health or physical disabilities, without jeopardizing their careers.

The “2022 ACC Health Policy Statement on Career Flexibility in Cardiology: A Report of the American College of Cardiology Solution Set Oversight Committee” was published online in the Journal of the American College of Cardiology.
 

‘Hard-driving profession’

The well-being of the cardiovascular workforce is critical to the achievement of the mission of the ACC, which is to transform cardiovascular care and improve heart health, the Health Policy writing committee stated. Career flexibility is an important component of ensuring that well-being, the authors wrote.

“The ACC has critically looked at the factors that contribute to the lack of diversity and inclusion in cardiovascular practice, and one of the issues is the lack of flexibility in our profession,” writing committee chair, Mary Norine Walsh, MD, medical director of the heart failure and cardiac transplantation programs, Ascension St. Vincent Heart Center, Indianapolis, Ind., told this news organization.

The notion of work-life balance has become increasingly important but cardiology as a profession has traditionally not been open to the idea of its value, Dr. Walsh said.

“We have a very hard-driving profession. It takes many years to train to do the work we do. The need for on-call services is very significant, and we go along because we have always done it this way, but if you don’t reexamine the way that you are structuring your work, you’ll never change it,” she said.

“For example, the ‘full time, full call, come to work after you’ve been up all night’ work ethic, which is no longer allowed for trainees, is still in effect once you get into university practice or clinical practice. We have interventional cardiologists up all night doing STEMI care for patients and then having a full clinic the next day,” Dr. Walsh said. “The changes that came about for trainees have not trickled up to the faculty or clinical practice level. It’s really a patient safety issue.”

She emphasized that the new policy statement is not focused solely on women. “The need for time away or flexible time around family planning, childbirth, and parental leave is increasingly important to our younger colleagues, both men and women.”

Dr. Walsh pointed out that the writing committee was carefully composed to include representation from all stakeholders.

“We have representation from very young cardiologists, one of whom was in training at the time we began our work. We have two systems CEOs who are cardiologists, we have a chair of medicine, we have two very senior cardiologists, and someone who works in industry,” she said.

The ACC also believes that cardiologists with physically demanding roles should have pathways to transition into other opportunities in patient care, research, or education.

“Right now, there are many cardiology practices that have traditional policies, where you are either all in, or you are all out. They do not allow for what we term a ‘step down’ policy, where you perhaps stop going into the cath lab, but you still do clinic and see patients,” Dr. Walsh noted.

“One of the goals of this policy statement is to allow for such practices to look at their compensation and structure, and to realize that their most senior cardiologists may be willing to stay on for several more years and be contributing members to the practice, but they may no longer wish to stay in the cath lab or be in the night call pool,” she said.

Transparency around compensation is also very important because cardiologists contemplating a reduced work schedule need to know how this will affect the amount of money they will be earning, she added.

“Transparency about policies around compensation are crucial because if an individual cardiologist wishes to pursue a flexible scheduling at any time in their career, it’s clear that they won’t have the same compensation as someone who is a full-time employee. All of this has to be very transparent and clear on both sides, so that the person deciding toward some flexibility understands what the implications are from a financial and compensation standpoint,” Dr. Walsh said.

As an example, a senior career cardiologist who no longer wants to take night calls should know what this may cost financially.

“The practice should set a valuation of night calls, so that the individual who makes the choice to step out of the call pool understands what the impact on their compensation will be. That type of transparency is necessary for all to ensure that individuals who seek flexibility will not be blindsided by the resulting decrease in financial compensation,” she said.
 

A growing need

“In its new health policy statement, the American College of Cardiology addresses the growing need for career flexibility as an important component of ensuring the well-being of the cardiovascular care workforce,” Harlan M. Krumholz, MD, SM, Harold H. Hines Jr. Professor of Medicine and professor in the Institute for Social and Policy Studies at Yale University, New Haven, Conn., told this news organization.

Courtesy Yale University

“The writing committee reviews opportunities for offering flexibility at all career levels to combat burnout and increase retention in the field, as well as proposes system, policy, and practice solutions to allow both men and women to emphasize and embrace work-life balance,” Dr. Krumholz said.

“The document provides pathways for cardiologists looking to pursue other interests or career transitions while maintaining excellence in clinical care,” he added. “Chief among these recommendations are flexible/part-time hours, leave and reentry policies, changes in job descriptions to support overarching cultural change, and equitable compensation and opportunities. The document is intended to be used as a guide for innovation in the cardiology workforce.”
 

‘Thoughtful and long overdue’

“This policy statement is thoughtful and long overdue,” Steven E. Nissen, MD, Lewis and Patricia Dickey Chair in Cardiovascular Medicine and professor of medicine at Cleveland Clinic, told this news organization.

“Career flexibility will allow cardiologists to fulfill family responsibilities while continuing to advance their careers. Successfully contributing to patient care and research does not require physicians to isolate themselves from all their other responsibilities,” Dr. Nissen added.

“I am pleased that the ACC has articulated the value of a balanced approach to career and family.”

Dr. Walsh, Dr. Krumholz, and Dr. Nissen report no relevant financial relationships.

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

A new statement from the American College of Cardiology is calling for a greater degree of career flexibility in the specialty to promote cardiologists’ personal and professional well-being and preserve excellence in patient care.

The statement recommends that cardiologists, from trainees to those contemplating retirement, be granted more leeway in their careers to allow them to take time for common life events, such as child-rearing, taking care of aged parents, or reducing their workload in case of poor health or physical disabilities, without jeopardizing their careers.

The “2022 ACC Health Policy Statement on Career Flexibility in Cardiology: A Report of the American College of Cardiology Solution Set Oversight Committee” was published online in the Journal of the American College of Cardiology.
 

‘Hard-driving profession’

The well-being of the cardiovascular workforce is critical to the achievement of the mission of the ACC, which is to transform cardiovascular care and improve heart health, the Health Policy writing committee stated. Career flexibility is an important component of ensuring that well-being, the authors wrote.

“The ACC has critically looked at the factors that contribute to the lack of diversity and inclusion in cardiovascular practice, and one of the issues is the lack of flexibility in our profession,” writing committee chair, Mary Norine Walsh, MD, medical director of the heart failure and cardiac transplantation programs, Ascension St. Vincent Heart Center, Indianapolis, Ind., told this news organization.

The notion of work-life balance has become increasingly important but cardiology as a profession has traditionally not been open to the idea of its value, Dr. Walsh said.

“We have a very hard-driving profession. It takes many years to train to do the work we do. The need for on-call services is very significant, and we go along because we have always done it this way, but if you don’t reexamine the way that you are structuring your work, you’ll never change it,” she said.

“For example, the ‘full time, full call, come to work after you’ve been up all night’ work ethic, which is no longer allowed for trainees, is still in effect once you get into university practice or clinical practice. We have interventional cardiologists up all night doing STEMI care for patients and then having a full clinic the next day,” Dr. Walsh said. “The changes that came about for trainees have not trickled up to the faculty or clinical practice level. It’s really a patient safety issue.”

She emphasized that the new policy statement is not focused solely on women. “The need for time away or flexible time around family planning, childbirth, and parental leave is increasingly important to our younger colleagues, both men and women.”

Dr. Walsh pointed out that the writing committee was carefully composed to include representation from all stakeholders.

“We have representation from very young cardiologists, one of whom was in training at the time we began our work. We have two systems CEOs who are cardiologists, we have a chair of medicine, we have two very senior cardiologists, and someone who works in industry,” she said.

The ACC also believes that cardiologists with physically demanding roles should have pathways to transition into other opportunities in patient care, research, or education.

“Right now, there are many cardiology practices that have traditional policies, where you are either all in, or you are all out. They do not allow for what we term a ‘step down’ policy, where you perhaps stop going into the cath lab, but you still do clinic and see patients,” Dr. Walsh noted.

“One of the goals of this policy statement is to allow for such practices to look at their compensation and structure, and to realize that their most senior cardiologists may be willing to stay on for several more years and be contributing members to the practice, but they may no longer wish to stay in the cath lab or be in the night call pool,” she said.

Transparency around compensation is also very important because cardiologists contemplating a reduced work schedule need to know how this will affect the amount of money they will be earning, she added.

“Transparency about policies around compensation are crucial because if an individual cardiologist wishes to pursue a flexible scheduling at any time in their career, it’s clear that they won’t have the same compensation as someone who is a full-time employee. All of this has to be very transparent and clear on both sides, so that the person deciding toward some flexibility understands what the implications are from a financial and compensation standpoint,” Dr. Walsh said.

As an example, a senior career cardiologist who no longer wants to take night calls should know what this may cost financially.

“The practice should set a valuation of night calls, so that the individual who makes the choice to step out of the call pool understands what the impact on their compensation will be. That type of transparency is necessary for all to ensure that individuals who seek flexibility will not be blindsided by the resulting decrease in financial compensation,” she said.
 

A growing need

“In its new health policy statement, the American College of Cardiology addresses the growing need for career flexibility as an important component of ensuring the well-being of the cardiovascular care workforce,” Harlan M. Krumholz, MD, SM, Harold H. Hines Jr. Professor of Medicine and professor in the Institute for Social and Policy Studies at Yale University, New Haven, Conn., told this news organization.

Courtesy Yale University

“The writing committee reviews opportunities for offering flexibility at all career levels to combat burnout and increase retention in the field, as well as proposes system, policy, and practice solutions to allow both men and women to emphasize and embrace work-life balance,” Dr. Krumholz said.

“The document provides pathways for cardiologists looking to pursue other interests or career transitions while maintaining excellence in clinical care,” he added. “Chief among these recommendations are flexible/part-time hours, leave and reentry policies, changes in job descriptions to support overarching cultural change, and equitable compensation and opportunities. The document is intended to be used as a guide for innovation in the cardiology workforce.”
 

‘Thoughtful and long overdue’

“This policy statement is thoughtful and long overdue,” Steven E. Nissen, MD, Lewis and Patricia Dickey Chair in Cardiovascular Medicine and professor of medicine at Cleveland Clinic, told this news organization.

“Career flexibility will allow cardiologists to fulfill family responsibilities while continuing to advance their careers. Successfully contributing to patient care and research does not require physicians to isolate themselves from all their other responsibilities,” Dr. Nissen added.

“I am pleased that the ACC has articulated the value of a balanced approach to career and family.”

Dr. Walsh, Dr. Krumholz, and Dr. Nissen report no relevant financial relationships.

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

The substantial reductions in cardiovascular disease (CVD) and all-cause mortality achieved with intensive blood pressure lowering in the landmark SPRINT trial were not sustained in a newly released long-term follow-up.

The loss of the mortality benefits corresponded with a steady climb in the average systolic blood pressures (SBP) in the intensive treatment group after the trial ended. The long-term benefit serves as a call to develop better strategies for sustained SBP control.

“We were disappointed but not surprised that the blood pressure levels in the intensive goal group were not sustained,” acknowledged William C. Cushman, MD, Medical Director, department of preventive medicine, University of Tennessee Health Science Center, Memphis. “There are many trials showing no residual or legacy effect once the intervention is stopped.”
 

Long-term results do not weaken SPRINT

One of the coinvestigators of this most recent analysis published in JAMA Cardiology and a member of the SPRINT writing committee at the time of its 2015 publication in the New England Journal of Medicine, Dr. Cushman pointed out that the long-term results do not weaken the main trial result. Long-term adherence was not part of the trial design.

“After the trial, we were no longer treating these participants, so it was up to them and their primary care providers to decide on blood pressure goals,” he noted in an interview. Based on the trajectory of benefit when the study was stopped, “it is possible longer intensive treatment may lead to more benefit and some long-term residual benefits.”

The senior author of this most recent analysis, Nicholas M. Pajewski, PhD, associate professor of biostatistics and data science, Wake Forest University, Winston-Salem, N.C., generally agreed. However, he pointed out that the most recent data do not rule out meaningful benefit after the study ended.

For one reason, the loss of the SBP advantage was gradual so that median SBP levels of the two groups did not meet for nearly 3 years. This likely explains why there was still an attenuation of CVD mortality for several years after the all-cause mortality benefit was lost, according to Dr. Pajewski.

“It is important to mention that we were not able to assess nonfatal cardiovascular events, so while the two groups do eventually come together, if one thinks about the distinction of healthspan versus lifespan, there was probably residual benefit in terms of delaying CVD morbidity and mortality,” Dr. Pajewski said.
 

In SPRINT, CVD mortality reduced 43%

In the 9,631-patient SPRINT trial, the intensive treatment group achieved a mean SBP of 121.4 mm Hg versus 136.2 mm Hg in the standard treatment group at the end of 1 year. The trial was stopped early after 3.26 years because of strength of the benefit in the intensive treatment arm. At that time, the reductions by hazard ratio were 25% (HR, 0.75; P < .001) for a composite major adverse cardiovascular event (MACE) endpoint, 43% for CVD mortality (P = .005), and 27% for all-cause mortality (P = .003).

In the new observational follow-up, mortality data were drawn from the National Death Index, and change in SBP from electronic health records in a subset of 2,944 SPRINT trial participants. Data were available and analyzed through 2020.

The newly published long-term observational analysis showed that the median SBP in the intensive treatment arm was already climbing by the end of the end of the trial. It reached 132.8 mm Hg at 5 years after randomization and then 140.4 mm Hg by 10 years.

This latter figure was essentially equivalent to the SBP among those who were initially randomized to the standard treatment arm.
 

Factors driving rising BP are unclear

There is limited information on what medications were taken by either group following the end of the trial, so the reason for the regression in the intensive treatment arm after leaving the trial is unknown. The authors speculated that this might have been due to therapeutic inertia among treating physicians, poor adherence among patients, the difficulty of keeping blood pressures low in patients with advancing pathology, or some combination of these.

“Perhaps the most important reason was that providers and patients were not aiming for the lower goals since guidelines did not recommend these targets until 2017,” Dr. Cushman pointed out. He noted that Healthcare Effectiveness Data and Information Set (HEDIS) “has still not adopted a performance measure goal of less than 140 mm Hg.”

In an accompanying editorial, the authors focused on what these data mean for population-based strategies to achieve sustained control of one of the most important risk factors for cardiovascular events. Led by Daniel W. Jones, MD, director of clinical and population science, University of Mississippi, Jackson, the authors of the editorial wrote that these data emphasized “the challenge of achieving sustained intensive BP reductions in the real-world setting.”

Basically, the editorial concluded that current approaches to achieving meaningful and sustained blood pressure control are not working.

This study “should be a wakeup call, but other previously published good data have also been ignored,” said Dr. Jones in an interview. Despite the compelling benefit from intensive blood pressure control the SPRINT trial, the observational follow-up emphasizes the difficulty of maintaining the rigorous reductions in blood pressure needed for sustained protection.

“Systemic change is necessary,” said Dr. Jones, reprising the major thrust of the editorial he wrote with Donald Clark III, MD, and Michael E. Hall, MD, who are both colleagues at the University of Mississippi.

“My view is that health care providers should be held responsible for motivating better compliance of their patients, just as a teacher is accountable for the outcomes of their students,” he said.

The solutions are not likely to be simple. Dr. Jones called for multiple strategies, such as employing telehealth and community health workers to monitor and reinforce blood pressure control, but he said that these and other data have convinced him that “simply trying harder at what we currently do” is not enough.

Dr. Pajewski and Dr. Jones report no potential conflicts of interest. Dr. Cushman reports a financial relationship with ReCor.

The substantial reductions in cardiovascular disease (CVD) and all-cause mortality achieved with intensive blood pressure lowering in the landmark SPRINT trial were not sustained in a newly released long-term follow-up.

The loss of the mortality benefits corresponded with a steady climb in the average systolic blood pressures (SBP) in the intensive treatment group after the trial ended. The long-term benefit serves as a call to develop better strategies for sustained SBP control.

“We were disappointed but not surprised that the blood pressure levels in the intensive goal group were not sustained,” acknowledged William C. Cushman, MD, Medical Director, department of preventive medicine, University of Tennessee Health Science Center, Memphis. “There are many trials showing no residual or legacy effect once the intervention is stopped.”
 

Long-term results do not weaken SPRINT

One of the coinvestigators of this most recent analysis published in JAMA Cardiology and a member of the SPRINT writing committee at the time of its 2015 publication in the New England Journal of Medicine, Dr. Cushman pointed out that the long-term results do not weaken the main trial result. Long-term adherence was not part of the trial design.

“After the trial, we were no longer treating these participants, so it was up to them and their primary care providers to decide on blood pressure goals,” he noted in an interview. Based on the trajectory of benefit when the study was stopped, “it is possible longer intensive treatment may lead to more benefit and some long-term residual benefits.”

The senior author of this most recent analysis, Nicholas M. Pajewski, PhD, associate professor of biostatistics and data science, Wake Forest University, Winston-Salem, N.C., generally agreed. However, he pointed out that the most recent data do not rule out meaningful benefit after the study ended.

For one reason, the loss of the SBP advantage was gradual so that median SBP levels of the two groups did not meet for nearly 3 years. This likely explains why there was still an attenuation of CVD mortality for several years after the all-cause mortality benefit was lost, according to Dr. Pajewski.

“It is important to mention that we were not able to assess nonfatal cardiovascular events, so while the two groups do eventually come together, if one thinks about the distinction of healthspan versus lifespan, there was probably residual benefit in terms of delaying CVD morbidity and mortality,” Dr. Pajewski said.
 

In SPRINT, CVD mortality reduced 43%

In the 9,631-patient SPRINT trial, the intensive treatment group achieved a mean SBP of 121.4 mm Hg versus 136.2 mm Hg in the standard treatment group at the end of 1 year. The trial was stopped early after 3.26 years because of strength of the benefit in the intensive treatment arm. At that time, the reductions by hazard ratio were 25% (HR, 0.75; P < .001) for a composite major adverse cardiovascular event (MACE) endpoint, 43% for CVD mortality (P = .005), and 27% for all-cause mortality (P = .003).

In the new observational follow-up, mortality data were drawn from the National Death Index, and change in SBP from electronic health records in a subset of 2,944 SPRINT trial participants. Data were available and analyzed through 2020.

The newly published long-term observational analysis showed that the median SBP in the intensive treatment arm was already climbing by the end of the end of the trial. It reached 132.8 mm Hg at 5 years after randomization and then 140.4 mm Hg by 10 years.

This latter figure was essentially equivalent to the SBP among those who were initially randomized to the standard treatment arm.
 

Factors driving rising BP are unclear

There is limited information on what medications were taken by either group following the end of the trial, so the reason for the regression in the intensive treatment arm after leaving the trial is unknown. The authors speculated that this might have been due to therapeutic inertia among treating physicians, poor adherence among patients, the difficulty of keeping blood pressures low in patients with advancing pathology, or some combination of these.

“Perhaps the most important reason was that providers and patients were not aiming for the lower goals since guidelines did not recommend these targets until 2017,” Dr. Cushman pointed out. He noted that Healthcare Effectiveness Data and Information Set (HEDIS) “has still not adopted a performance measure goal of less than 140 mm Hg.”

In an accompanying editorial, the authors focused on what these data mean for population-based strategies to achieve sustained control of one of the most important risk factors for cardiovascular events. Led by Daniel W. Jones, MD, director of clinical and population science, University of Mississippi, Jackson, the authors of the editorial wrote that these data emphasized “the challenge of achieving sustained intensive BP reductions in the real-world setting.”

Basically, the editorial concluded that current approaches to achieving meaningful and sustained blood pressure control are not working.

This study “should be a wakeup call, but other previously published good data have also been ignored,” said Dr. Jones in an interview. Despite the compelling benefit from intensive blood pressure control the SPRINT trial, the observational follow-up emphasizes the difficulty of maintaining the rigorous reductions in blood pressure needed for sustained protection.

“Systemic change is necessary,” said Dr. Jones, reprising the major thrust of the editorial he wrote with Donald Clark III, MD, and Michael E. Hall, MD, who are both colleagues at the University of Mississippi.

“My view is that health care providers should be held responsible for motivating better compliance of their patients, just as a teacher is accountable for the outcomes of their students,” he said.

The solutions are not likely to be simple. Dr. Jones called for multiple strategies, such as employing telehealth and community health workers to monitor and reinforce blood pressure control, but he said that these and other data have convinced him that “simply trying harder at what we currently do” is not enough.

Dr. Pajewski and Dr. Jones report no potential conflicts of interest. Dr. Cushman reports a financial relationship with ReCor.

The substantial reductions in cardiovascular disease (CVD) and all-cause mortality achieved with intensive blood pressure lowering in the landmark SPRINT trial were not sustained in a newly released long-term follow-up.

The loss of the mortality benefits corresponded with a steady climb in the average systolic blood pressures (SBP) in the intensive treatment group after the trial ended. The long-term benefit serves as a call to develop better strategies for sustained SBP control.

“We were disappointed but not surprised that the blood pressure levels in the intensive goal group were not sustained,” acknowledged William C. Cushman, MD, Medical Director, department of preventive medicine, University of Tennessee Health Science Center, Memphis. “There are many trials showing no residual or legacy effect once the intervention is stopped.”
 

Long-term results do not weaken SPRINT

One of the coinvestigators of this most recent analysis published in JAMA Cardiology and a member of the SPRINT writing committee at the time of its 2015 publication in the New England Journal of Medicine, Dr. Cushman pointed out that the long-term results do not weaken the main trial result. Long-term adherence was not part of the trial design.

“After the trial, we were no longer treating these participants, so it was up to them and their primary care providers to decide on blood pressure goals,” he noted in an interview. Based on the trajectory of benefit when the study was stopped, “it is possible longer intensive treatment may lead to more benefit and some long-term residual benefits.”

The senior author of this most recent analysis, Nicholas M. Pajewski, PhD, associate professor of biostatistics and data science, Wake Forest University, Winston-Salem, N.C., generally agreed. However, he pointed out that the most recent data do not rule out meaningful benefit after the study ended.

For one reason, the loss of the SBP advantage was gradual so that median SBP levels of the two groups did not meet for nearly 3 years. This likely explains why there was still an attenuation of CVD mortality for several years after the all-cause mortality benefit was lost, according to Dr. Pajewski.

“It is important to mention that we were not able to assess nonfatal cardiovascular events, so while the two groups do eventually come together, if one thinks about the distinction of healthspan versus lifespan, there was probably residual benefit in terms of delaying CVD morbidity and mortality,” Dr. Pajewski said.
 

In SPRINT, CVD mortality reduced 43%

In the 9,631-patient SPRINT trial, the intensive treatment group achieved a mean SBP of 121.4 mm Hg versus 136.2 mm Hg in the standard treatment group at the end of 1 year. The trial was stopped early after 3.26 years because of strength of the benefit in the intensive treatment arm. At that time, the reductions by hazard ratio were 25% (HR, 0.75; P < .001) for a composite major adverse cardiovascular event (MACE) endpoint, 43% for CVD mortality (P = .005), and 27% for all-cause mortality (P = .003).

In the new observational follow-up, mortality data were drawn from the National Death Index, and change in SBP from electronic health records in a subset of 2,944 SPRINT trial participants. Data were available and analyzed through 2020.

The newly published long-term observational analysis showed that the median SBP in the intensive treatment arm was already climbing by the end of the end of the trial. It reached 132.8 mm Hg at 5 years after randomization and then 140.4 mm Hg by 10 years.

This latter figure was essentially equivalent to the SBP among those who were initially randomized to the standard treatment arm.
 

Factors driving rising BP are unclear

There is limited information on what medications were taken by either group following the end of the trial, so the reason for the regression in the intensive treatment arm after leaving the trial is unknown. The authors speculated that this might have been due to therapeutic inertia among treating physicians, poor adherence among patients, the difficulty of keeping blood pressures low in patients with advancing pathology, or some combination of these.

“Perhaps the most important reason was that providers and patients were not aiming for the lower goals since guidelines did not recommend these targets until 2017,” Dr. Cushman pointed out. He noted that Healthcare Effectiveness Data and Information Set (HEDIS) “has still not adopted a performance measure goal of less than 140 mm Hg.”

In an accompanying editorial, the authors focused on what these data mean for population-based strategies to achieve sustained control of one of the most important risk factors for cardiovascular events. Led by Daniel W. Jones, MD, director of clinical and population science, University of Mississippi, Jackson, the authors of the editorial wrote that these data emphasized “the challenge of achieving sustained intensive BP reductions in the real-world setting.”

Basically, the editorial concluded that current approaches to achieving meaningful and sustained blood pressure control are not working.

This study “should be a wakeup call, but other previously published good data have also been ignored,” said Dr. Jones in an interview. Despite the compelling benefit from intensive blood pressure control the SPRINT trial, the observational follow-up emphasizes the difficulty of maintaining the rigorous reductions in blood pressure needed for sustained protection.

“Systemic change is necessary,” said Dr. Jones, reprising the major thrust of the editorial he wrote with Donald Clark III, MD, and Michael E. Hall, MD, who are both colleagues at the University of Mississippi.

“My view is that health care providers should be held responsible for motivating better compliance of their patients, just as a teacher is accountable for the outcomes of their students,” he said.

The solutions are not likely to be simple. Dr. Jones called for multiple strategies, such as employing telehealth and community health workers to monitor and reinforce blood pressure control, but he said that these and other data have convinced him that “simply trying harder at what we currently do” is not enough.

Dr. Pajewski and Dr. Jones report no potential conflicts of interest. Dr. Cushman reports a financial relationship with ReCor.

A “high-intensity-care” strategy based on early and rapid uptitration of guideline-directed meds improves postdischarge clinical outcomes for patients hospitalized with decompensated heart failure (HF), suggest topline results from a randomized trial.

The STRONG-HF study was halted early on recommendation from its data safety monitoring board after an interim analysis suggested the high-intensity-care strategy significantly cut risk of death or HF readmission, compared with a standard-of-care approach.

The trial termination was announced  in a press release from one of its sponsors, The Heart Initiative, a nonprofit organization. STRONG-HF was also supported by Roche Diagnostics.

The early termination was based on interim data from the approximately 1,000 patients, out of an estimated planned enrollment of 1,800, who had been followed for at least 90 days. The study’s actual primary endpoint had been defined by death or HF readmission at 6 months.

The announcement did not include outcomes data or P values, or any other indication of the magnitude of benefit from the high-intensity-care approach.

Patients in STRONG-HF who had been assigned to a high-intensity-care strategy had been started in-hospital on a beta blocker, a renin-angiotensin system inhibitor (RASi), and a mineralocorticoid receptor blocker (MRA) with dosages uptitrated at least halfway by the time of discharge.

The meds were uptitrated fully within 2 weeks of discharge guided by clinical and biomarker assessments, especially natriuretic peptides, at frequent postdischarge visits, the press release states.

Patients conducted “safety visits 1 week after any uptitration and follow-up visits at 6 weeks and 3 months,” the announcement notes. “At each visit, patients were assessed by physical examination for congestion and blood tests, including NT-proBNP measurements.”

The “full STRONG-HF trial results” are scheduled for presentation at the American Heart Association annual scientific sessions, the announcement states.

STRONG-HF is sponsored by The Heart Initiative and Roche Diagnostics.

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

A “high-intensity-care” strategy based on early and rapid uptitration of guideline-directed meds improves postdischarge clinical outcomes for patients hospitalized with decompensated heart failure (HF), suggest topline results from a randomized trial.

The STRONG-HF study was halted early on recommendation from its data safety monitoring board after an interim analysis suggested the high-intensity-care strategy significantly cut risk of death or HF readmission, compared with a standard-of-care approach.

The trial termination was announced  in a press release from one of its sponsors, The Heart Initiative, a nonprofit organization. STRONG-HF was also supported by Roche Diagnostics.

The early termination was based on interim data from the approximately 1,000 patients, out of an estimated planned enrollment of 1,800, who had been followed for at least 90 days. The study’s actual primary endpoint had been defined by death or HF readmission at 6 months.

The announcement did not include outcomes data or P values, or any other indication of the magnitude of benefit from the high-intensity-care approach.

Patients in STRONG-HF who had been assigned to a high-intensity-care strategy had been started in-hospital on a beta blocker, a renin-angiotensin system inhibitor (RASi), and a mineralocorticoid receptor blocker (MRA) with dosages uptitrated at least halfway by the time of discharge.

The meds were uptitrated fully within 2 weeks of discharge guided by clinical and biomarker assessments, especially natriuretic peptides, at frequent postdischarge visits, the press release states.

Patients conducted “safety visits 1 week after any uptitration and follow-up visits at 6 weeks and 3 months,” the announcement notes. “At each visit, patients were assessed by physical examination for congestion and blood tests, including NT-proBNP measurements.”

The “full STRONG-HF trial results” are scheduled for presentation at the American Heart Association annual scientific sessions, the announcement states.

STRONG-HF is sponsored by The Heart Initiative and Roche Diagnostics.

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

A “high-intensity-care” strategy based on early and rapid uptitration of guideline-directed meds improves postdischarge clinical outcomes for patients hospitalized with decompensated heart failure (HF), suggest topline results from a randomized trial.

The STRONG-HF study was halted early on recommendation from its data safety monitoring board after an interim analysis suggested the high-intensity-care strategy significantly cut risk of death or HF readmission, compared with a standard-of-care approach.

The trial termination was announced  in a press release from one of its sponsors, The Heart Initiative, a nonprofit organization. STRONG-HF was also supported by Roche Diagnostics.

The early termination was based on interim data from the approximately 1,000 patients, out of an estimated planned enrollment of 1,800, who had been followed for at least 90 days. The study’s actual primary endpoint had been defined by death or HF readmission at 6 months.

The announcement did not include outcomes data or P values, or any other indication of the magnitude of benefit from the high-intensity-care approach.

Patients in STRONG-HF who had been assigned to a high-intensity-care strategy had been started in-hospital on a beta blocker, a renin-angiotensin system inhibitor (RASi), and a mineralocorticoid receptor blocker (MRA) with dosages uptitrated at least halfway by the time of discharge.

The meds were uptitrated fully within 2 weeks of discharge guided by clinical and biomarker assessments, especially natriuretic peptides, at frequent postdischarge visits, the press release states.

Patients conducted “safety visits 1 week after any uptitration and follow-up visits at 6 weeks and 3 months,” the announcement notes. “At each visit, patients were assessed by physical examination for congestion and blood tests, including NT-proBNP measurements.”

The “full STRONG-HF trial results” are scheduled for presentation at the American Heart Association annual scientific sessions, the announcement states.

STRONG-HF is sponsored by The Heart Initiative and Roche Diagnostics.

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

Athletes with mild hypertrophic cardiomyopathy (HCM) at low risk of sudden cardiac death (SCD) can safely continue to exercise at competitive levels, a retrospective study suggests.

During a mean follow-up of 4.5 years, athletes who continued to engage in high-intensity competitive sports after a mild HCM diagnosis were free of cardiac symptoms, and there were no deaths, incidents of sustained ventricular tachycardia or syncope, or changes in cardiac electrical, structural, or functional phenotypes.

Pavel1964/iStock/Getty Images

“This study supports emerging evidence that HCM individuals with a low-risk profile and mild hypertrophy may engage in vigorous exercise and competitive sport,” Sanjay Sharma, MD, of St. George’s University of London, said in an interview. Current guidelines from the European Society of Cardiology and the American College of Cardiology support a more liberal approach to exercise for these individuals.

That said, he added, “it is important to emphasize that our cohort consisted of a group of adult competitive athletes who had probably been competing for several years before the diagnosis was made and therefore represented a self-selected, low-risk cohort. It is difficult to extrapolate this data to adolescent athletes, who appear to be more vulnerable to exercise-related SCD from HCM.”

The study was published online in the Journal of the American College of Cardiology.
 

Vigorous exercise OK for some

Dr. Sharma and colleagues analyzed data from 53 athletes with HCM who continued to participate in competitive sports. The mean age was 39 years, 98% were men, and 72% were White. About half (53%) competed as professionals, and were most commonly engaged in cycling, football, running, and rugby.

Participants underwent 6-12 monthly assessments that included electrocardiograms, echocardiograms, cardiopulmonary exercise testing, Holter monitoring (≥ 24 hours), and cardiac magnetic resonance imaging. A majority (64.2%) were evaluated because of an abnormal electrocardiograms, and one presented with an incidental abnormal echocardiogram.

About a quarter (24.5%) were symptomatic and 5 (9.4%) were identified on family screening. Eight (15%) had a family history of HCM, and six (11.3%) of SCD.

At the baseline evaluation, all athletes had a “low” ESC 5-year SCD risk score for HCM (1.9% ± 0.9%). None had syncope. Mean peak VO₂ was 40.7 ± 6.8 mL/kg per minute.

The mean left ventricular wall thickness was 14.6 ± 2.3 mm; all had normal LV systolic and diastolic function and no LV outflow tract obstruction at rest or on provocation testing. In addition, none had an LV apical aneurysm.

Twenty-two (41%) showed late gadolinium enhancement on baseline cardiac magnetic resonance imaging.

A total of 19 participants underwent genotyping; 4 (21.1%) had a pathogenic/likely pathogenic sarcomeric variant. None took cardiovascular medication or had an implantable cardioverter defibrillator (ICD).

During a mean follow-up of 4.5 years, all participants continued to exercise at the same level as before their diagnosis; none underwent detraining. All stayed free of cardiac symptoms, and there were no deaths, sustained ventricular tachycardia episodes, or syncope.

Four demonstrated new, nonsustained ventricular tachycardia (NSVT) during follow-up, one of whom underwent ICD implantation because of an increased risk score and subsequently moderated exercise levels.

One participant had a 30-second atrial fibrillation (AFib) episode lasting longer than 30 seconds, started on a beta-blocker and oral anticoagulation, and also moderated exercise levels.

The event rate was 2.1% per year for asymptomatic arrhythmias (NSVT and AFib). No changes were observed in the cardiac electrical, structural, or functional phenotype during follow-up.

Dr. Sharma and colleagues stated: “Our sample size is small; however, it is nearly double the size of a previously studied Italian athletic cohort, and one-half were professional athletes. Furthermore, 17% of our cohort comprised Black athletes who are perceived to be at higher risk of SCD than White athletes.”

Daniele Massera, MD, assistant professor in the HCM program, department of medicine, Charney Division of Cardiology, New York University Langone Health, said in an interview: “Of note, these were athletes/patients at the very low end of phenotypic severity of HCM. ... It is also notable that diastolic function was normal in all of them, an uncommon finding in patients with HCM.”

Like Dr. Sharma, he said the findings are in line with recent guidelines, and cautioned: “This small study applies only to a very small subset of patients who are being evaluated at specialized HCM programs: asymptomatic male individuals who have mild, low-risk HCM and are on no medicines.

“The findings cannot be generalized to the population of symptomatic individuals with (or without) outflow obstruction, more severe hypertrophy, and who have ICDs and/or take medication for symptoms, nor to younger patients or adolescents, who may be at higher risk for adverse outcomes,” he concluded.
 

Individualized approach urged

Dr. Sharma was a coauthor of the recent article challenging the traditional restrictive approach to exercise for athletes diagnosed with HCM and other inherited cardiovascular diseases. The article suggested that individualized recommendations, taking risks into consideration, can help guide those who want to exercise or participate in competitive sports.

Dr. Sharma also is a coauthor of a 6-month follow-up to the SAFE-HCM study, which compared the effects of a supervised 12-week high-intensity exercise program to usual care in low-risk individuals with HCM (mean age, 45.7). 

In the 6-month follow-up study, published as an abstract in the European Journal of Preventive Cardiology 2021 supplement, “exercising individuals had improved functional capacity and atherosclerotic risk profile and there were no differences in the composite safety outcomes [cardiovascular death, cardiac arrest, device therapy, exercise-induced syncope, sustained VT, NSVT, or sustained atrial arrhythmias] between exercising individuals and usual care individuals,” Dr. Sharma said.

The full study will soon be ready to submit for publication, he added.

No commercial funding or relevant conflicts of interest were disclosed.

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

Athletes with mild hypertrophic cardiomyopathy (HCM) at low risk of sudden cardiac death (SCD) can safely continue to exercise at competitive levels, a retrospective study suggests.

During a mean follow-up of 4.5 years, athletes who continued to engage in high-intensity competitive sports after a mild HCM diagnosis were free of cardiac symptoms, and there were no deaths, incidents of sustained ventricular tachycardia or syncope, or changes in cardiac electrical, structural, or functional phenotypes.

Pavel1964/iStock/Getty Images

“This study supports emerging evidence that HCM individuals with a low-risk profile and mild hypertrophy may engage in vigorous exercise and competitive sport,” Sanjay Sharma, MD, of St. George’s University of London, said in an interview. Current guidelines from the European Society of Cardiology and the American College of Cardiology support a more liberal approach to exercise for these individuals.

That said, he added, “it is important to emphasize that our cohort consisted of a group of adult competitive athletes who had probably been competing for several years before the diagnosis was made and therefore represented a self-selected, low-risk cohort. It is difficult to extrapolate this data to adolescent athletes, who appear to be more vulnerable to exercise-related SCD from HCM.”

The study was published online in the Journal of the American College of Cardiology.
 

Vigorous exercise OK for some

Dr. Sharma and colleagues analyzed data from 53 athletes with HCM who continued to participate in competitive sports. The mean age was 39 years, 98% were men, and 72% were White. About half (53%) competed as professionals, and were most commonly engaged in cycling, football, running, and rugby.

Participants underwent 6-12 monthly assessments that included electrocardiograms, echocardiograms, cardiopulmonary exercise testing, Holter monitoring (≥ 24 hours), and cardiac magnetic resonance imaging. A majority (64.2%) were evaluated because of an abnormal electrocardiograms, and one presented with an incidental abnormal echocardiogram.

About a quarter (24.5%) were symptomatic and 5 (9.4%) were identified on family screening. Eight (15%) had a family history of HCM, and six (11.3%) of SCD.

At the baseline evaluation, all athletes had a “low” ESC 5-year SCD risk score for HCM (1.9% ± 0.9%). None had syncope. Mean peak VO₂ was 40.7 ± 6.8 mL/kg per minute.

The mean left ventricular wall thickness was 14.6 ± 2.3 mm; all had normal LV systolic and diastolic function and no LV outflow tract obstruction at rest or on provocation testing. In addition, none had an LV apical aneurysm.

Twenty-two (41%) showed late gadolinium enhancement on baseline cardiac magnetic resonance imaging.

A total of 19 participants underwent genotyping; 4 (21.1%) had a pathogenic/likely pathogenic sarcomeric variant. None took cardiovascular medication or had an implantable cardioverter defibrillator (ICD).

During a mean follow-up of 4.5 years, all participants continued to exercise at the same level as before their diagnosis; none underwent detraining. All stayed free of cardiac symptoms, and there were no deaths, sustained ventricular tachycardia episodes, or syncope.

Four demonstrated new, nonsustained ventricular tachycardia (NSVT) during follow-up, one of whom underwent ICD implantation because of an increased risk score and subsequently moderated exercise levels.

One participant had a 30-second atrial fibrillation (AFib) episode lasting longer than 30 seconds, started on a beta-blocker and oral anticoagulation, and also moderated exercise levels.

The event rate was 2.1% per year for asymptomatic arrhythmias (NSVT and AFib). No changes were observed in the cardiac electrical, structural, or functional phenotype during follow-up.

Dr. Sharma and colleagues stated: “Our sample size is small; however, it is nearly double the size of a previously studied Italian athletic cohort, and one-half were professional athletes. Furthermore, 17% of our cohort comprised Black athletes who are perceived to be at higher risk of SCD than White athletes.”

Daniele Massera, MD, assistant professor in the HCM program, department of medicine, Charney Division of Cardiology, New York University Langone Health, said in an interview: “Of note, these were athletes/patients at the very low end of phenotypic severity of HCM. ... It is also notable that diastolic function was normal in all of them, an uncommon finding in patients with HCM.”

Like Dr. Sharma, he said the findings are in line with recent guidelines, and cautioned: “This small study applies only to a very small subset of patients who are being evaluated at specialized HCM programs: asymptomatic male individuals who have mild, low-risk HCM and are on no medicines.

“The findings cannot be generalized to the population of symptomatic individuals with (or without) outflow obstruction, more severe hypertrophy, and who have ICDs and/or take medication for symptoms, nor to younger patients or adolescents, who may be at higher risk for adverse outcomes,” he concluded.
 

Individualized approach urged

Dr. Sharma was a coauthor of the recent article challenging the traditional restrictive approach to exercise for athletes diagnosed with HCM and other inherited cardiovascular diseases. The article suggested that individualized recommendations, taking risks into consideration, can help guide those who want to exercise or participate in competitive sports.

Dr. Sharma also is a coauthor of a 6-month follow-up to the SAFE-HCM study, which compared the effects of a supervised 12-week high-intensity exercise program to usual care in low-risk individuals with HCM (mean age, 45.7). 

In the 6-month follow-up study, published as an abstract in the European Journal of Preventive Cardiology 2021 supplement, “exercising individuals had improved functional capacity and atherosclerotic risk profile and there were no differences in the composite safety outcomes [cardiovascular death, cardiac arrest, device therapy, exercise-induced syncope, sustained VT, NSVT, or sustained atrial arrhythmias] between exercising individuals and usual care individuals,” Dr. Sharma said.

The full study will soon be ready to submit for publication, he added.

No commercial funding or relevant conflicts of interest were disclosed.

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

Athletes with mild hypertrophic cardiomyopathy (HCM) at low risk of sudden cardiac death (SCD) can safely continue to exercise at competitive levels, a retrospective study suggests.

During a mean follow-up of 4.5 years, athletes who continued to engage in high-intensity competitive sports after a mild HCM diagnosis were free of cardiac symptoms, and there were no deaths, incidents of sustained ventricular tachycardia or syncope, or changes in cardiac electrical, structural, or functional phenotypes.

Pavel1964/iStock/Getty Images

“This study supports emerging evidence that HCM individuals with a low-risk profile and mild hypertrophy may engage in vigorous exercise and competitive sport,” Sanjay Sharma, MD, of St. George’s University of London, said in an interview. Current guidelines from the European Society of Cardiology and the American College of Cardiology support a more liberal approach to exercise for these individuals.

That said, he added, “it is important to emphasize that our cohort consisted of a group of adult competitive athletes who had probably been competing for several years before the diagnosis was made and therefore represented a self-selected, low-risk cohort. It is difficult to extrapolate this data to adolescent athletes, who appear to be more vulnerable to exercise-related SCD from HCM.”

The study was published online in the Journal of the American College of Cardiology.
 

Vigorous exercise OK for some

Dr. Sharma and colleagues analyzed data from 53 athletes with HCM who continued to participate in competitive sports. The mean age was 39 years, 98% were men, and 72% were White. About half (53%) competed as professionals, and were most commonly engaged in cycling, football, running, and rugby.

Participants underwent 6-12 monthly assessments that included electrocardiograms, echocardiograms, cardiopulmonary exercise testing, Holter monitoring (≥ 24 hours), and cardiac magnetic resonance imaging. A majority (64.2%) were evaluated because of an abnormal electrocardiograms, and one presented with an incidental abnormal echocardiogram.

About a quarter (24.5%) were symptomatic and 5 (9.4%) were identified on family screening. Eight (15%) had a family history of HCM, and six (11.3%) of SCD.

At the baseline evaluation, all athletes had a “low” ESC 5-year SCD risk score for HCM (1.9% ± 0.9%). None had syncope. Mean peak VO₂ was 40.7 ± 6.8 mL/kg per minute.

The mean left ventricular wall thickness was 14.6 ± 2.3 mm; all had normal LV systolic and diastolic function and no LV outflow tract obstruction at rest or on provocation testing. In addition, none had an LV apical aneurysm.

Twenty-two (41%) showed late gadolinium enhancement on baseline cardiac magnetic resonance imaging.

A total of 19 participants underwent genotyping; 4 (21.1%) had a pathogenic/likely pathogenic sarcomeric variant. None took cardiovascular medication or had an implantable cardioverter defibrillator (ICD).

During a mean follow-up of 4.5 years, all participants continued to exercise at the same level as before their diagnosis; none underwent detraining. All stayed free of cardiac symptoms, and there were no deaths, sustained ventricular tachycardia episodes, or syncope.

Four demonstrated new, nonsustained ventricular tachycardia (NSVT) during follow-up, one of whom underwent ICD implantation because of an increased risk score and subsequently moderated exercise levels.

One participant had a 30-second atrial fibrillation (AFib) episode lasting longer than 30 seconds, started on a beta-blocker and oral anticoagulation, and also moderated exercise levels.

The event rate was 2.1% per year for asymptomatic arrhythmias (NSVT and AFib). No changes were observed in the cardiac electrical, structural, or functional phenotype during follow-up.

Dr. Sharma and colleagues stated: “Our sample size is small; however, it is nearly double the size of a previously studied Italian athletic cohort, and one-half were professional athletes. Furthermore, 17% of our cohort comprised Black athletes who are perceived to be at higher risk of SCD than White athletes.”

Daniele Massera, MD, assistant professor in the HCM program, department of medicine, Charney Division of Cardiology, New York University Langone Health, said in an interview: “Of note, these were athletes/patients at the very low end of phenotypic severity of HCM. ... It is also notable that diastolic function was normal in all of them, an uncommon finding in patients with HCM.”

Like Dr. Sharma, he said the findings are in line with recent guidelines, and cautioned: “This small study applies only to a very small subset of patients who are being evaluated at specialized HCM programs: asymptomatic male individuals who have mild, low-risk HCM and are on no medicines.

“The findings cannot be generalized to the population of symptomatic individuals with (or without) outflow obstruction, more severe hypertrophy, and who have ICDs and/or take medication for symptoms, nor to younger patients or adolescents, who may be at higher risk for adverse outcomes,” he concluded.
 

Individualized approach urged

Dr. Sharma was a coauthor of the recent article challenging the traditional restrictive approach to exercise for athletes diagnosed with HCM and other inherited cardiovascular diseases. The article suggested that individualized recommendations, taking risks into consideration, can help guide those who want to exercise or participate in competitive sports.

Dr. Sharma also is a coauthor of a 6-month follow-up to the SAFE-HCM study, which compared the effects of a supervised 12-week high-intensity exercise program to usual care in low-risk individuals with HCM (mean age, 45.7). 

In the 6-month follow-up study, published as an abstract in the European Journal of Preventive Cardiology 2021 supplement, “exercising individuals had improved functional capacity and atherosclerotic risk profile and there were no differences in the composite safety outcomes [cardiovascular death, cardiac arrest, device therapy, exercise-induced syncope, sustained VT, NSVT, or sustained atrial arrhythmias] between exercising individuals and usual care individuals,” Dr. Sharma said.

The full study will soon be ready to submit for publication, he added.

No commercial funding or relevant conflicts of interest were disclosed.

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

The Food and Drug Administration has approved a furosemide preparation (Furoscix, scPharmaceuticals) intended for subcutaneous self-administration by outpatients with chronic heart failure and volume overload, the company has announced.

The product is indicated for use with a SmartDose On-Body Infuser (West Pharmaceutical Services) single-use subcutaneous administration device, which affixes to the abdomen.

Olivier Le Moal/Getty Images

The infuser is loaded by the patient or caregiver with a prefilled cartridge and is programmed to deliver Furoscix 30 mg over 1 hour followed by a 4-hour infusion at 12.5 mg/h, for a total fixed dose of 80 mg, scPharmaceuticals said in a press release on the drug approval.

Furosemide, a loop diuretic and one of the world’s most frequently used drugs, is conventionally given intravenously in the hospital or orally on an outpatient basis.

The company describes its furosemide preparation, used with the infuser, as “the first and only FDA-approved subcutaneous loop diuretic that delivers [intravenous]-equivalent diuresis at home.” It has been shown to “produce similar diuresis and natriuresis compared to intravenous furosemide.”

“This marks a tremendous opportunity to improve the at-home management of worsening congestion in patients with heart failure who display reduced responsiveness to oral diuretics and require administration of [intravenous] diuretics, which typically requires admission to the hospital,” William T. Abraham, MD, said in the press release.

The FDA approval “is significant and will allow patients to be treated outside of the hospital setting,” said Dr. Abraham, of Ohio State University, Columbus, and an scPharmaceuticals board member.

The Furoscix indication doesn’t cover emergent use or use in acute pulmonary edema, nor is it meant to be used chronically “and should be replaced with oral diuretics as soon as practical,” the company states.

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

The Food and Drug Administration has approved a furosemide preparation (Furoscix, scPharmaceuticals) intended for subcutaneous self-administration by outpatients with chronic heart failure and volume overload, the company has announced.

The product is indicated for use with a SmartDose On-Body Infuser (West Pharmaceutical Services) single-use subcutaneous administration device, which affixes to the abdomen.

Olivier Le Moal/Getty Images

The infuser is loaded by the patient or caregiver with a prefilled cartridge and is programmed to deliver Furoscix 30 mg over 1 hour followed by a 4-hour infusion at 12.5 mg/h, for a total fixed dose of 80 mg, scPharmaceuticals said in a press release on the drug approval.

Furosemide, a loop diuretic and one of the world’s most frequently used drugs, is conventionally given intravenously in the hospital or orally on an outpatient basis.

The company describes its furosemide preparation, used with the infuser, as “the first and only FDA-approved subcutaneous loop diuretic that delivers [intravenous]-equivalent diuresis at home.” It has been shown to “produce similar diuresis and natriuresis compared to intravenous furosemide.”

“This marks a tremendous opportunity to improve the at-home management of worsening congestion in patients with heart failure who display reduced responsiveness to oral diuretics and require administration of [intravenous] diuretics, which typically requires admission to the hospital,” William T. Abraham, MD, said in the press release.

The FDA approval “is significant and will allow patients to be treated outside of the hospital setting,” said Dr. Abraham, of Ohio State University, Columbus, and an scPharmaceuticals board member.

The Furoscix indication doesn’t cover emergent use or use in acute pulmonary edema, nor is it meant to be used chronically “and should be replaced with oral diuretics as soon as practical,” the company states.

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

The Food and Drug Administration has approved a furosemide preparation (Furoscix, scPharmaceuticals) intended for subcutaneous self-administration by outpatients with chronic heart failure and volume overload, the company has announced.

The product is indicated for use with a SmartDose On-Body Infuser (West Pharmaceutical Services) single-use subcutaneous administration device, which affixes to the abdomen.

Olivier Le Moal/Getty Images

The infuser is loaded by the patient or caregiver with a prefilled cartridge and is programmed to deliver Furoscix 30 mg over 1 hour followed by a 4-hour infusion at 12.5 mg/h, for a total fixed dose of 80 mg, scPharmaceuticals said in a press release on the drug approval.

Furosemide, a loop diuretic and one of the world’s most frequently used drugs, is conventionally given intravenously in the hospital or orally on an outpatient basis.

The company describes its furosemide preparation, used with the infuser, as “the first and only FDA-approved subcutaneous loop diuretic that delivers [intravenous]-equivalent diuresis at home.” It has been shown to “produce similar diuresis and natriuresis compared to intravenous furosemide.”

“This marks a tremendous opportunity to improve the at-home management of worsening congestion in patients with heart failure who display reduced responsiveness to oral diuretics and require administration of [intravenous] diuretics, which typically requires admission to the hospital,” William T. Abraham, MD, said in the press release.

The FDA approval “is significant and will allow patients to be treated outside of the hospital setting,” said Dr. Abraham, of Ohio State University, Columbus, and an scPharmaceuticals board member.

The Furoscix indication doesn’t cover emergent use or use in acute pulmonary edema, nor is it meant to be used chronically “and should be replaced with oral diuretics as soon as practical,” the company states.

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

A recent medical meeting I attended included multiple sessions on the use of artificial intelligence (AI), a mere preview, I suspect, of what is to come for both patients and physicians.

I vow not to be a contrarian, but I have concerns. If we’d known how cell phones would permeate nearly every waking moment of our lives, would we have built in more protections from the onset?

Although anyone can see the enormous potential of AI in medicine, harnessing the wonders of it without guarding against the dangers could be paramount to texting and driving. 

A palpable disruption in the common work-a-day human interaction is a given. CEOs who mind the bottom line will seek every opportunity to cut personnel whenever machine learning can deliver. As our dependence on algorithms increases, our need to understand electrocardiogram interpretation and echocardiographic calculations will wane. Subtle case information will go undetected. Nuanced subconscious alerts regarding the patient condition will go unnoticed.

These realities are never reflected in the pronouncements of companies who promote and develop AI.
 

The 2-minute echo

In September 2020, Carolyn Lam, MBBS, PhD, and James Hare, MBA, founders of the AI tech company US2.AI, told Healthcare Transformers that AI advances in echocardiology will turn “a manual process of 30 minutes, 250 clicks, with up to 21% variability among fully trained sonographers analyzing the same exam, into an AI-automated process taking 2 minutes, 1 click, with 0% variability.”

Let’s contrast this 2-minute human-machine interaction with the standard 20- to 30-minute human-to-human echocardiography procedure.

Take Mrs. Smith, for instance. She is referred for echocardiography for shortness of breath. She’s shown to a room and instructed to lie down on a table, where she undergoes a brief AI-directed acquisition of images and then a cheery dismissal from the imaging lab. Medical corporate chief financial officers will salivate at the efficiency, the decrease in cost for personnel, and the sharp increase in put-through for the echo lab schedule.

But what if Mrs. Smith gets a standard 30-minute sonographer-directed exam and the astute echocardiographer notes a left ventricular ejection fraction of 38%. A conversation with the patient reveals that she lost her son a few weeks ago. Upon completion of the study, the patient stands up and then adds, “I hope I can sleep in my bed tonight.” Thinking there may be more to the patient’s insomnia than grief-driven anxiety, the sonographer asks her to explain. “I had to sleep in a chair last night because I couldn’t breathe,” Mrs. Smith replies.

The sonographer reasons correctly that Mrs. Smith is likely a few weeks past an acute coronary syndrome for which she didn’t seek attention and is now in heart failure. The consulting cardiologist is alerted. Mrs. Smith is worked into the office schedule a week earlier than planned, and a costly in-patient stay for acute heart failure or worse is avoided.

Here’s a true-life example (some details have been changed to protect the patient’s identity): Mr. Rodriquez was referred for echocardiography because of dizziness. The sonographer notes significant mitral regurgitation and a decline in left ventricular ejection fraction from moderately impaired to severely reduced. When the sonographer inquires about a fresh bruise over Mr. Rodriguez’s left eye, he replies that he “must have fallen, but can’t remember.” The sonographer also notes runs of nonsustained ventricular tachycardia on the echo telemetry, and after a phone call from the echo lab to the ordering physician, Mr. Rodriquez is admitted. Instead of chancing a sudden death at home while awaiting follow-up, he undergoes catheterization and gets an implantable cardioverter defibrillator.

These scenarios illustrate that a 2-minute visit for AI-directed acquisition of echocardiogram images will never garner the protections of a conversation with a human. Any attempts at downplaying the importance of these human interactions are misguided.

Sometimes we embrace the latest advances in medicine while failing to tend to the most rudimentary necessities of data analysis and reporting. Catherine M. Otto, MD, director of the heart valve clinic and a professor of cardiology at the University of Washington Medical Center, Seattle, is a fan of the basics.

At the recent annual congress of the European Society of Cardiology, she commented on the AI-ENHANCED trial, which used an AI decision support algorithm to identify patients with moderate to severe aortic stenosis, which is associated with poor survival if left untreated. She correctly highlighted that while we are discussing the merits of AI-driven assessment of aortic stenosis, we are doing so in an era when many echo interpreters exclude critical information. The vital findings of aortic valve area, Vmax, and ejection fraction are often nowhere to be seen on reports. We should attend to our basic flaws in interpretation and reporting before we shift our focus to AI.
 

Flawed algorithms

Incorrect AI algorithms that are broadly adopted could negatively affect the health of millions.

Perhaps the most unsettling claim is made by causaLens: “Causal AI is the only technology that can reason and make choices like humans do,” the website states. A tantalizing tag line that is categorically untrue.

Our mysterious and complex neurophysiological function of reasoning still eludes understanding, but one thing is certain: medical reasoning originates with listening, seeing, and touching.

As AI infiltrates mainstream medicine, opportunities for hearing, observing, and palpating will be greatly reduced.

Folkert Asselbergs from University Medical Center Utrecht, the Netherlands, who has cautioned against overhyping AI, was the discussant for an ESC study on the use of causal AI to improve  cardiovascular risk estimation.

He flashed a slide of a 2019 Science article on racial bias in an algorithm that U.S. health care systems use.  Remedying that bias “would increase the percentage of Black people receiving additional help from 17.7% to 46.5%,” according to the authors.  

Successful integration of AI-driven technology will come only if we build human interaction into every patient encounter.

I hope I don’t live to see the rise of the physician cyborg.

Artificial intelligence could be the greatest boon since the invention of the stethoscope, but it will be our downfall if we stop administering a healthy dose of humanity to every patient encounter.

Melissa Walton-Shirley, MD, is a clinical cardiologist in Nashville, Tenn., who has retired from full-time invasive cardiology. She disclosed no relevant conflicts of interest.
 

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

A recent medical meeting I attended included multiple sessions on the use of artificial intelligence (AI), a mere preview, I suspect, of what is to come for both patients and physicians.

I vow not to be a contrarian, but I have concerns. If we’d known how cell phones would permeate nearly every waking moment of our lives, would we have built in more protections from the onset?

Although anyone can see the enormous potential of AI in medicine, harnessing the wonders of it without guarding against the dangers could be paramount to texting and driving. 

A palpable disruption in the common work-a-day human interaction is a given. CEOs who mind the bottom line will seek every opportunity to cut personnel whenever machine learning can deliver. As our dependence on algorithms increases, our need to understand electrocardiogram interpretation and echocardiographic calculations will wane. Subtle case information will go undetected. Nuanced subconscious alerts regarding the patient condition will go unnoticed.

These realities are never reflected in the pronouncements of companies who promote and develop AI.
 

The 2-minute echo

In September 2020, Carolyn Lam, MBBS, PhD, and James Hare, MBA, founders of the AI tech company US2.AI, told Healthcare Transformers that AI advances in echocardiology will turn “a manual process of 30 minutes, 250 clicks, with up to 21% variability among fully trained sonographers analyzing the same exam, into an AI-automated process taking 2 minutes, 1 click, with 0% variability.”

Let’s contrast this 2-minute human-machine interaction with the standard 20- to 30-minute human-to-human echocardiography procedure.

Take Mrs. Smith, for instance. She is referred for echocardiography for shortness of breath. She’s shown to a room and instructed to lie down on a table, where she undergoes a brief AI-directed acquisition of images and then a cheery dismissal from the imaging lab. Medical corporate chief financial officers will salivate at the efficiency, the decrease in cost for personnel, and the sharp increase in put-through for the echo lab schedule.

But what if Mrs. Smith gets a standard 30-minute sonographer-directed exam and the astute echocardiographer notes a left ventricular ejection fraction of 38%. A conversation with the patient reveals that she lost her son a few weeks ago. Upon completion of the study, the patient stands up and then adds, “I hope I can sleep in my bed tonight.” Thinking there may be more to the patient’s insomnia than grief-driven anxiety, the sonographer asks her to explain. “I had to sleep in a chair last night because I couldn’t breathe,” Mrs. Smith replies.

The sonographer reasons correctly that Mrs. Smith is likely a few weeks past an acute coronary syndrome for which she didn’t seek attention and is now in heart failure. The consulting cardiologist is alerted. Mrs. Smith is worked into the office schedule a week earlier than planned, and a costly in-patient stay for acute heart failure or worse is avoided.

Here’s a true-life example (some details have been changed to protect the patient’s identity): Mr. Rodriquez was referred for echocardiography because of dizziness. The sonographer notes significant mitral regurgitation and a decline in left ventricular ejection fraction from moderately impaired to severely reduced. When the sonographer inquires about a fresh bruise over Mr. Rodriguez’s left eye, he replies that he “must have fallen, but can’t remember.” The sonographer also notes runs of nonsustained ventricular tachycardia on the echo telemetry, and after a phone call from the echo lab to the ordering physician, Mr. Rodriquez is admitted. Instead of chancing a sudden death at home while awaiting follow-up, he undergoes catheterization and gets an implantable cardioverter defibrillator.

These scenarios illustrate that a 2-minute visit for AI-directed acquisition of echocardiogram images will never garner the protections of a conversation with a human. Any attempts at downplaying the importance of these human interactions are misguided.

Sometimes we embrace the latest advances in medicine while failing to tend to the most rudimentary necessities of data analysis and reporting. Catherine M. Otto, MD, director of the heart valve clinic and a professor of cardiology at the University of Washington Medical Center, Seattle, is a fan of the basics.

At the recent annual congress of the European Society of Cardiology, she commented on the AI-ENHANCED trial, which used an AI decision support algorithm to identify patients with moderate to severe aortic stenosis, which is associated with poor survival if left untreated. She correctly highlighted that while we are discussing the merits of AI-driven assessment of aortic stenosis, we are doing so in an era when many echo interpreters exclude critical information. The vital findings of aortic valve area, Vmax, and ejection fraction are often nowhere to be seen on reports. We should attend to our basic flaws in interpretation and reporting before we shift our focus to AI.
 

Flawed algorithms

Incorrect AI algorithms that are broadly adopted could negatively affect the health of millions.

Perhaps the most unsettling claim is made by causaLens: “Causal AI is the only technology that can reason and make choices like humans do,” the website states. A tantalizing tag line that is categorically untrue.

Our mysterious and complex neurophysiological function of reasoning still eludes understanding, but one thing is certain: medical reasoning originates with listening, seeing, and touching.

As AI infiltrates mainstream medicine, opportunities for hearing, observing, and palpating will be greatly reduced.

Folkert Asselbergs from University Medical Center Utrecht, the Netherlands, who has cautioned against overhyping AI, was the discussant for an ESC study on the use of causal AI to improve  cardiovascular risk estimation.

He flashed a slide of a 2019 Science article on racial bias in an algorithm that U.S. health care systems use.  Remedying that bias “would increase the percentage of Black people receiving additional help from 17.7% to 46.5%,” according to the authors.  

Successful integration of AI-driven technology will come only if we build human interaction into every patient encounter.

I hope I don’t live to see the rise of the physician cyborg.

Artificial intelligence could be the greatest boon since the invention of the stethoscope, but it will be our downfall if we stop administering a healthy dose of humanity to every patient encounter.

Melissa Walton-Shirley, MD, is a clinical cardiologist in Nashville, Tenn., who has retired from full-time invasive cardiology. She disclosed no relevant conflicts of interest.
 

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

A recent medical meeting I attended included multiple sessions on the use of artificial intelligence (AI), a mere preview, I suspect, of what is to come for both patients and physicians.

I vow not to be a contrarian, but I have concerns. If we’d known how cell phones would permeate nearly every waking moment of our lives, would we have built in more protections from the onset?

Although anyone can see the enormous potential of AI in medicine, harnessing the wonders of it without guarding against the dangers could be paramount to texting and driving. 

A palpable disruption in the common work-a-day human interaction is a given. CEOs who mind the bottom line will seek every opportunity to cut personnel whenever machine learning can deliver. As our dependence on algorithms increases, our need to understand electrocardiogram interpretation and echocardiographic calculations will wane. Subtle case information will go undetected. Nuanced subconscious alerts regarding the patient condition will go unnoticed.

These realities are never reflected in the pronouncements of companies who promote and develop AI.
 

The 2-minute echo

In September 2020, Carolyn Lam, MBBS, PhD, and James Hare, MBA, founders of the AI tech company US2.AI, told Healthcare Transformers that AI advances in echocardiology will turn “a manual process of 30 minutes, 250 clicks, with up to 21% variability among fully trained sonographers analyzing the same exam, into an AI-automated process taking 2 minutes, 1 click, with 0% variability.”

Let’s contrast this 2-minute human-machine interaction with the standard 20- to 30-minute human-to-human echocardiography procedure.

Take Mrs. Smith, for instance. She is referred for echocardiography for shortness of breath. She’s shown to a room and instructed to lie down on a table, where she undergoes a brief AI-directed acquisition of images and then a cheery dismissal from the imaging lab. Medical corporate chief financial officers will salivate at the efficiency, the decrease in cost for personnel, and the sharp increase in put-through for the echo lab schedule.

But what if Mrs. Smith gets a standard 30-minute sonographer-directed exam and the astute echocardiographer notes a left ventricular ejection fraction of 38%. A conversation with the patient reveals that she lost her son a few weeks ago. Upon completion of the study, the patient stands up and then adds, “I hope I can sleep in my bed tonight.” Thinking there may be more to the patient’s insomnia than grief-driven anxiety, the sonographer asks her to explain. “I had to sleep in a chair last night because I couldn’t breathe,” Mrs. Smith replies.

The sonographer reasons correctly that Mrs. Smith is likely a few weeks past an acute coronary syndrome for which she didn’t seek attention and is now in heart failure. The consulting cardiologist is alerted. Mrs. Smith is worked into the office schedule a week earlier than planned, and a costly in-patient stay for acute heart failure or worse is avoided.

Here’s a true-life example (some details have been changed to protect the patient’s identity): Mr. Rodriquez was referred for echocardiography because of dizziness. The sonographer notes significant mitral regurgitation and a decline in left ventricular ejection fraction from moderately impaired to severely reduced. When the sonographer inquires about a fresh bruise over Mr. Rodriguez’s left eye, he replies that he “must have fallen, but can’t remember.” The sonographer also notes runs of nonsustained ventricular tachycardia on the echo telemetry, and after a phone call from the echo lab to the ordering physician, Mr. Rodriquez is admitted. Instead of chancing a sudden death at home while awaiting follow-up, he undergoes catheterization and gets an implantable cardioverter defibrillator.

These scenarios illustrate that a 2-minute visit for AI-directed acquisition of echocardiogram images will never garner the protections of a conversation with a human. Any attempts at downplaying the importance of these human interactions are misguided.

Sometimes we embrace the latest advances in medicine while failing to tend to the most rudimentary necessities of data analysis and reporting. Catherine M. Otto, MD, director of the heart valve clinic and a professor of cardiology at the University of Washington Medical Center, Seattle, is a fan of the basics.

At the recent annual congress of the European Society of Cardiology, she commented on the AI-ENHANCED trial, which used an AI decision support algorithm to identify patients with moderate to severe aortic stenosis, which is associated with poor survival if left untreated. She correctly highlighted that while we are discussing the merits of AI-driven assessment of aortic stenosis, we are doing so in an era when many echo interpreters exclude critical information. The vital findings of aortic valve area, Vmax, and ejection fraction are often nowhere to be seen on reports. We should attend to our basic flaws in interpretation and reporting before we shift our focus to AI.
 

Flawed algorithms

Incorrect AI algorithms that are broadly adopted could negatively affect the health of millions.

Perhaps the most unsettling claim is made by causaLens: “Causal AI is the only technology that can reason and make choices like humans do,” the website states. A tantalizing tag line that is categorically untrue.

Our mysterious and complex neurophysiological function of reasoning still eludes understanding, but one thing is certain: medical reasoning originates with listening, seeing, and touching.

As AI infiltrates mainstream medicine, opportunities for hearing, observing, and palpating will be greatly reduced.

Folkert Asselbergs from University Medical Center Utrecht, the Netherlands, who has cautioned against overhyping AI, was the discussant for an ESC study on the use of causal AI to improve  cardiovascular risk estimation.

He flashed a slide of a 2019 Science article on racial bias in an algorithm that U.S. health care systems use.  Remedying that bias “would increase the percentage of Black people receiving additional help from 17.7% to 46.5%,” according to the authors.  

Successful integration of AI-driven technology will come only if we build human interaction into every patient encounter.

I hope I don’t live to see the rise of the physician cyborg.

Artificial intelligence could be the greatest boon since the invention of the stethoscope, but it will be our downfall if we stop administering a healthy dose of humanity to every patient encounter.

Melissa Walton-Shirley, MD, is a clinical cardiologist in Nashville, Tenn., who has retired from full-time invasive cardiology. She disclosed no relevant conflicts of interest.
 

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

Whatever the mechanism of benefit from dapagliflozin (Farxiga) in patients with heart failure (HF) – and potentially also other sodium-glucose cotransporter 2 (SGLT2) inhibitors – its blood pressure lowering effects aren’t likely to contribute much.

Indeed, at least in patients with HF and non-reduced ejection fractions, dapagliflozin has only a modest BP-lowering effect and cuts cardiovascular (CV) risk regardless of baseline pressure or change in systolic BP, suggests a secondary analysis from the large placebo-controlled DELIVER trial.

Systolic BP fell over 1 month by just under 2 mmHg, on average, in trial patients with either mildly reduced or preserved ejection fraction (HFmrEF or HFpEF, respectively) assigned to take dapagliflozin versus placebo.

The effect was achieved without increasing the risk for adverse events from dapagliflozin, even among patients with the lowest baseline systolic pressures. Adverse outcomes overall, however, were more common at the lowest systolic BP level than at higher pressures, researchers reported.

They say the findings should help alleviate long-standing concerns that initiating SGLT2 inhibitors, with their recognized diuretic effects, might present a hazard in patients with HF and low systolic BP.

“It is a consistent theme in heart failure trials that the blood pressure–lowering effect of SGLT2 inhibitors is more modest than it is in non–heart-failure populations,” Senthil Selvaraj, MD, Duke University, Durham, N.C., told this news organization.

Changes to antihypertensive drug therapy throughout the trial, which presumably enhanced BP responses and “might occur more frequently in the placebo group,” Dr. Selvaraj said, “might explain why the blood pressure effect is a little bit more modest in this population.”

Dr. Selvaraj presented the analysis at the Annual Scientific Meeting of the Heart Failure Society of America, held in National Harbor, Md., and is lead author on its same-day publication in JACC: Heart Failure.

The findings “reinforce the clinical benefits of SGLT2 inhibitors in patients with heart failure across the full spectrum of ejection fractions and large range of systolic blood pressures,” said Gregg C. Fonarow, MD, University of California, Los Angeles Medical Center, who was not part of the DELIVER analysis.

The study’s greater adjusted risks for CV and all-cause mortality risks at the lowest baseline systolic pressures “parallels a series of observational analyses from registries, including OPTIMIZE-HF,” Dr. Fonarow observed.

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

Whatever the mechanism of benefit from dapagliflozin (Farxiga) in patients with heart failure (HF) – and potentially also other sodium-glucose cotransporter 2 (SGLT2) inhibitors – its blood pressure lowering effects aren’t likely to contribute much.

Indeed, at least in patients with HF and non-reduced ejection fractions, dapagliflozin has only a modest BP-lowering effect and cuts cardiovascular (CV) risk regardless of baseline pressure or change in systolic BP, suggests a secondary analysis from the large placebo-controlled DELIVER trial.

Systolic BP fell over 1 month by just under 2 mmHg, on average, in trial patients with either mildly reduced or preserved ejection fraction (HFmrEF or HFpEF, respectively) assigned to take dapagliflozin versus placebo.

The effect was achieved without increasing the risk for adverse events from dapagliflozin, even among patients with the lowest baseline systolic pressures. Adverse outcomes overall, however, were more common at the lowest systolic BP level than at higher pressures, researchers reported.

They say the findings should help alleviate long-standing concerns that initiating SGLT2 inhibitors, with their recognized diuretic effects, might present a hazard in patients with HF and low systolic BP.

“It is a consistent theme in heart failure trials that the blood pressure–lowering effect of SGLT2 inhibitors is more modest than it is in non–heart-failure populations,” Senthil Selvaraj, MD, Duke University, Durham, N.C., told this news organization.

Changes to antihypertensive drug therapy throughout the trial, which presumably enhanced BP responses and “might occur more frequently in the placebo group,” Dr. Selvaraj said, “might explain why the blood pressure effect is a little bit more modest in this population.”

Dr. Selvaraj presented the analysis at the Annual Scientific Meeting of the Heart Failure Society of America, held in National Harbor, Md., and is lead author on its same-day publication in JACC: Heart Failure.

The findings “reinforce the clinical benefits of SGLT2 inhibitors in patients with heart failure across the full spectrum of ejection fractions and large range of systolic blood pressures,” said Gregg C. Fonarow, MD, University of California, Los Angeles Medical Center, who was not part of the DELIVER analysis.

The study’s greater adjusted risks for CV and all-cause mortality risks at the lowest baseline systolic pressures “parallels a series of observational analyses from registries, including OPTIMIZE-HF,” Dr. Fonarow observed.

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

Whatever the mechanism of benefit from dapagliflozin (Farxiga) in patients with heart failure (HF) – and potentially also other sodium-glucose cotransporter 2 (SGLT2) inhibitors – its blood pressure lowering effects aren’t likely to contribute much.

Indeed, at least in patients with HF and non-reduced ejection fractions, dapagliflozin has only a modest BP-lowering effect and cuts cardiovascular (CV) risk regardless of baseline pressure or change in systolic BP, suggests a secondary analysis from the large placebo-controlled DELIVER trial.

Systolic BP fell over 1 month by just under 2 mmHg, on average, in trial patients with either mildly reduced or preserved ejection fraction (HFmrEF or HFpEF, respectively) assigned to take dapagliflozin versus placebo.

The effect was achieved without increasing the risk for adverse events from dapagliflozin, even among patients with the lowest baseline systolic pressures. Adverse outcomes overall, however, were more common at the lowest systolic BP level than at higher pressures, researchers reported.

They say the findings should help alleviate long-standing concerns that initiating SGLT2 inhibitors, with their recognized diuretic effects, might present a hazard in patients with HF and low systolic BP.

“It is a consistent theme in heart failure trials that the blood pressure–lowering effect of SGLT2 inhibitors is more modest than it is in non–heart-failure populations,” Senthil Selvaraj, MD, Duke University, Durham, N.C., told this news organization.

Changes to antihypertensive drug therapy throughout the trial, which presumably enhanced BP responses and “might occur more frequently in the placebo group,” Dr. Selvaraj said, “might explain why the blood pressure effect is a little bit more modest in this population.”

Dr. Selvaraj presented the analysis at the Annual Scientific Meeting of the Heart Failure Society of America, held in National Harbor, Md., and is lead author on its same-day publication in JACC: Heart Failure.

The findings “reinforce the clinical benefits of SGLT2 inhibitors in patients with heart failure across the full spectrum of ejection fractions and large range of systolic blood pressures,” said Gregg C. Fonarow, MD, University of California, Los Angeles Medical Center, who was not part of the DELIVER analysis.

The study’s greater adjusted risks for CV and all-cause mortality risks at the lowest baseline systolic pressures “parallels a series of observational analyses from registries, including OPTIMIZE-HF,” Dr. Fonarow observed.

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

Weight loss after bariatric surgery was linked with visceral fat reduction as well as reduced blood pressure, fasting glucose, and left ventricular remodeling, based an imaging study in 213 patients.

“We found that ventricular function measured by strain imaging improved in both the left and right sides of the heart, but function measured in the traditional method using endocardial motion [in other words, ejection fraction] actually worsened,” senior investigator Barry A. Borlaug, MD, said in an interview.

Although previous studies have shown positive effects of weight loss on the heart after bariatric surgery, most have been short term and have not specifically examined the effects of visceral fat reduction, wrote the investigators.

“We are in the middle of an increasing epidemic of obesity worldwide, but particularly in the United States, where it is currently projected that one in two adults will be obese by 2030,” added Dr. Borlaug of Mayo Clinic, Rochester, Minn. “Heart failure with preserved ejection fraction (HFpEF) is growing in tandem, and numerous recent studies have shown that obesity is one of the strongest risk factors for developing HFpEF, and that the severity of HFpEF is intimately linked to excess body fat. This suggests that therapies to reduce body fat could improve the cardiac abnormalities that cause HFpEF, which was our focus in this study,” he explained.

In the study, published in the Journal of the American College of Cardiology, the researchers reviewed echocardiography data from 213 obese patients before and more than 180 days after bariatric surgery. They also measured abdominal visceral adipose tissue (VAT) of 52 patients via computed tomography. The average age of the patients was 54 years, the average body mass index was 45 kg/m², and 67% were women. Comorbidities included hypertension, diabetes, dyslipidemia, and obstructive sleep apnea.

The primary outcome was changes in cardiac structure and function.

After a median follow-up of 5.3 years, patients overall averaged a 23% reduction in body weight and a 22% reduction in BMI. In the 52 patients with abdominal scans, the VAT area decreased by 30% overall. Changes in left ventricular mass were significantly correlated to changes in the VAT.

Epicardial adipose thickness decreased by 14% overall. Left and right ventricular longitudinal strains improved at follow-up, but left atrial strain deteriorated, the researchers noted.

Although the mechanism of action remains unclear, the results suggest that left ventricular remodeling was associated with visceral adiposity rather than subcutaneous fat, the researchers wrote.

They also found that right ventricular strain was negatively correlated with VAT, but not with body weight or BMI.

“These findings suggest that weight loss, particularly reduction in visceral adiposity, benefits [right ventricular] structure and function in a manner akin to that observed in the [left ventricle],” the researchers noted.

Some surprises and limitations

Dr. Borlaug said he found some, but not all, of the results surprising. “Earlier studies had shown evidence for benefit from weight loss on cardiac structure and function, but had been limited by smaller sample sizes, shorter durations of evaluation, and variable methods used,” he said in an interview.

The findings that strain imaging showed both left and right ventricular function improved while EF declined “shows some of the problems with using EF, as it is affected by chamber size and geometry. We have previously shown that patients with HFpEF display an increase in fat around the heart, and this affects cardiac function and interaction between the left and right sides of the heart, so we expected to see that this fat depot would be reduced, and this was indeed the case,” Dr. Borlaug added.

In the current study, “visceral fat was most strongly tied to the heart remodeling in obesity, and changes in visceral fat were most strongly tied to improvements in cardiac structure following weight loss,” Dr. Borlaug told this news organization. “This further supports this concept that excess visceral fat plays a key role in HFpEF, especially in the abdomen and around the heart,” he said.

However, “The biggest surprise was the discordant effects in the left atrium,” Dr. Borlaug said. “Left atrial remodeling and dysfunction play a crucial role in HFpEF as well, and we expected that this would improve following weight loss, but in fact we observed that left atrial function deteriorated, and other indicators of atrial myopathy worsened, including higher estimates of left atrial pressures and increased prevalence of atrial fibrillation,” he said.

This difference emphasizes that weight loss may not address all abnormalities that lead to HFpEF, although a key limitation of the current study was the lack of a control group of patients with the same degree of obesity and no weight-loss intervention, and the deterioration in left atrial function might have been even greater in the absence of weight loss, Dr. Borlaug added.
 

Larger numbers support effects

Previous research shows that structural heart changes associated with obesity can be reversed through weight loss, but the current study fills a gap by providing long-term data in a larger sample than previously studied, wrote Paul Heidenreich, MD, of Stanford (Calif.) University in an accompanying editorial).

“There has been uncertainty regarding the prolonged effect of weight loss on cardiac function; this study was larger than many prior studies and provided a longer follow-up,” Dr. Heidenreich said in an interview.

“One unusual finding was that, while weight loss led to left ventricle reverse remodeling (reduction in wall thickness), the same effect was not seen for the left atrium; the left atrial size continued to increase,” he said. “I would have expected the left atrial changes to mirror the changes in the left ventricle,” he noted.

The findings support the greater cardiac risk of visceral vs. subcutaneous adipose tissue, and although body mass index will retain prognostic value, measures of central obesity are more likely predictors of cardiac structural changes and events and should be reported in clinical studies, Dr. Heidenreich wrote.

However, “We need a better understanding of the factors that influence left atrial remodeling and reverse remodeling,” Dr. Heidenreich told this news organization. “While left ventricular compliance and pressure play a role, there are other factors that need to be elucidated,” he said.

 

Studies in progress may inform practice

The current data call for further study to test novel treatments to facilitate weight loss in patients with HFpEF and those at risk for HFpEF, and some of these studies with medicines are underway, Dr. Borlaug said in the interview.

“Until such studies are completed, we will not truly understand the effects of weight loss on the heart, but the present data certainly provide strong support that patients who have obesity and HFpEF or are at risk for HFpEF should try to lose weight through lifestyle interventions,” he said. 

Whether the cardiac changes seen in the current study would be different with nonsurgical weight loss remains a key question because many obese patients are reluctant to undergo bariatric surgery, Dr. Borlaug said. “We cannot assess whether the effects would differ with nonsurgical weight loss, and this requires further study,” he added.

As for additional research, “Randomized, controlled trials of weight-loss interventions, with appropriate controls and comprehensive assessments of cardiac structure, function, and hemodynamics will be most informative,” said Dr. Borlaug. “Larger trials powered to evaluate cardiovascular outcomes such as heart failure hospitalization or cardiovascular death also are critically important to better understand the role of weight loss to treat and prevent HFpEF, the ultimate form of obesity-related heart disease,” he emphasized.

The study was supported in part by grants to lead author Dr. Hidemi Sorimachi of the Mayo Clinic from the Uehara Memorial Foundation, Japan, and to corresponding author Dr. Borlaug from the National Institutes of Health. Dr. Borlaug also disclosed previous grants from National Institutes of Health/National Heart, Lung, and Blood Institute, AstraZeneca, Corvia, Medtronic, GlaxoSmithKline, Mesoblast, Novartis, and Tenax Therapeutics; and consulting fees from Actelion, Amgen, Aria, Axon Therapies, Boehringer Ingelheim, Edwards Lifesciences, Eli Lilly, Imbria, Janssen, Merck, Novo Nordisk, and VADovations. Dr. Heidenreich had no financial disclosures.

Weight loss after bariatric surgery was linked with visceral fat reduction as well as reduced blood pressure, fasting glucose, and left ventricular remodeling, based an imaging study in 213 patients.

“We found that ventricular function measured by strain imaging improved in both the left and right sides of the heart, but function measured in the traditional method using endocardial motion [in other words, ejection fraction] actually worsened,” senior investigator Barry A. Borlaug, MD, said in an interview.

Although previous studies have shown positive effects of weight loss on the heart after bariatric surgery, most have been short term and have not specifically examined the effects of visceral fat reduction, wrote the investigators.

“We are in the middle of an increasing epidemic of obesity worldwide, but particularly in the United States, where it is currently projected that one in two adults will be obese by 2030,” added Dr. Borlaug of Mayo Clinic, Rochester, Minn. “Heart failure with preserved ejection fraction (HFpEF) is growing in tandem, and numerous recent studies have shown that obesity is one of the strongest risk factors for developing HFpEF, and that the severity of HFpEF is intimately linked to excess body fat. This suggests that therapies to reduce body fat could improve the cardiac abnormalities that cause HFpEF, which was our focus in this study,” he explained.

In the study, published in the Journal of the American College of Cardiology, the researchers reviewed echocardiography data from 213 obese patients before and more than 180 days after bariatric surgery. They also measured abdominal visceral adipose tissue (VAT) of 52 patients via computed tomography. The average age of the patients was 54 years, the average body mass index was 45 kg/m², and 67% were women. Comorbidities included hypertension, diabetes, dyslipidemia, and obstructive sleep apnea.

The primary outcome was changes in cardiac structure and function.

After a median follow-up of 5.3 years, patients overall averaged a 23% reduction in body weight and a 22% reduction in BMI. In the 52 patients with abdominal scans, the VAT area decreased by 30% overall. Changes in left ventricular mass were significantly correlated to changes in the VAT.

Epicardial adipose thickness decreased by 14% overall. Left and right ventricular longitudinal strains improved at follow-up, but left atrial strain deteriorated, the researchers noted.

Although the mechanism of action remains unclear, the results suggest that left ventricular remodeling was associated with visceral adiposity rather than subcutaneous fat, the researchers wrote.

They also found that right ventricular strain was negatively correlated with VAT, but not with body weight or BMI.

“These findings suggest that weight loss, particularly reduction in visceral adiposity, benefits [right ventricular] structure and function in a manner akin to that observed in the [left ventricle],” the researchers noted.

Some surprises and limitations

Dr. Borlaug said he found some, but not all, of the results surprising. “Earlier studies had shown evidence for benefit from weight loss on cardiac structure and function, but had been limited by smaller sample sizes, shorter durations of evaluation, and variable methods used,” he said in an interview.

The findings that strain imaging showed both left and right ventricular function improved while EF declined “shows some of the problems with using EF, as it is affected by chamber size and geometry. We have previously shown that patients with HFpEF display an increase in fat around the heart, and this affects cardiac function and interaction between the left and right sides of the heart, so we expected to see that this fat depot would be reduced, and this was indeed the case,” Dr. Borlaug added.

In the current study, “visceral fat was most strongly tied to the heart remodeling in obesity, and changes in visceral fat were most strongly tied to improvements in cardiac structure following weight loss,” Dr. Borlaug told this news organization. “This further supports this concept that excess visceral fat plays a key role in HFpEF, especially in the abdomen and around the heart,” he said.

However, “The biggest surprise was the discordant effects in the left atrium,” Dr. Borlaug said. “Left atrial remodeling and dysfunction play a crucial role in HFpEF as well, and we expected that this would improve following weight loss, but in fact we observed that left atrial function deteriorated, and other indicators of atrial myopathy worsened, including higher estimates of left atrial pressures and increased prevalence of atrial fibrillation,” he said.

This difference emphasizes that weight loss may not address all abnormalities that lead to HFpEF, although a key limitation of the current study was the lack of a control group of patients with the same degree of obesity and no weight-loss intervention, and the deterioration in left atrial function might have been even greater in the absence of weight loss, Dr. Borlaug added.
 

Larger numbers support effects

Previous research shows that structural heart changes associated with obesity can be reversed through weight loss, but the current study fills a gap by providing long-term data in a larger sample than previously studied, wrote Paul Heidenreich, MD, of Stanford (Calif.) University in an accompanying editorial).

“There has been uncertainty regarding the prolonged effect of weight loss on cardiac function; this study was larger than many prior studies and provided a longer follow-up,” Dr. Heidenreich said in an interview.

“One unusual finding was that, while weight loss led to left ventricle reverse remodeling (reduction in wall thickness), the same effect was not seen for the left atrium; the left atrial size continued to increase,” he said. “I would have expected the left atrial changes to mirror the changes in the left ventricle,” he noted.

The findings support the greater cardiac risk of visceral vs. subcutaneous adipose tissue, and although body mass index will retain prognostic value, measures of central obesity are more likely predictors of cardiac structural changes and events and should be reported in clinical studies, Dr. Heidenreich wrote.

However, “We need a better understanding of the factors that influence left atrial remodeling and reverse remodeling,” Dr. Heidenreich told this news organization. “While left ventricular compliance and pressure play a role, there are other factors that need to be elucidated,” he said.

 

Studies in progress may inform practice

The current data call for further study to test novel treatments to facilitate weight loss in patients with HFpEF and those at risk for HFpEF, and some of these studies with medicines are underway, Dr. Borlaug said in the interview.

“Until such studies are completed, we will not truly understand the effects of weight loss on the heart, but the present data certainly provide strong support that patients who have obesity and HFpEF or are at risk for HFpEF should try to lose weight through lifestyle interventions,” he said. 

Whether the cardiac changes seen in the current study would be different with nonsurgical weight loss remains a key question because many obese patients are reluctant to undergo bariatric surgery, Dr. Borlaug said. “We cannot assess whether the effects would differ with nonsurgical weight loss, and this requires further study,” he added.

As for additional research, “Randomized, controlled trials of weight-loss interventions, with appropriate controls and comprehensive assessments of cardiac structure, function, and hemodynamics will be most informative,” said Dr. Borlaug. “Larger trials powered to evaluate cardiovascular outcomes such as heart failure hospitalization or cardiovascular death also are critically important to better understand the role of weight loss to treat and prevent HFpEF, the ultimate form of obesity-related heart disease,” he emphasized.

The study was supported in part by grants to lead author Dr. Hidemi Sorimachi of the Mayo Clinic from the Uehara Memorial Foundation, Japan, and to corresponding author Dr. Borlaug from the National Institutes of Health. Dr. Borlaug also disclosed previous grants from National Institutes of Health/National Heart, Lung, and Blood Institute, AstraZeneca, Corvia, Medtronic, GlaxoSmithKline, Mesoblast, Novartis, and Tenax Therapeutics; and consulting fees from Actelion, Amgen, Aria, Axon Therapies, Boehringer Ingelheim, Edwards Lifesciences, Eli Lilly, Imbria, Janssen, Merck, Novo Nordisk, and VADovations. Dr. Heidenreich had no financial disclosures.

Weight loss after bariatric surgery was linked with visceral fat reduction as well as reduced blood pressure, fasting glucose, and left ventricular remodeling, based an imaging study in 213 patients.

“We found that ventricular function measured by strain imaging improved in both the left and right sides of the heart, but function measured in the traditional method using endocardial motion [in other words, ejection fraction] actually worsened,” senior investigator Barry A. Borlaug, MD, said in an interview.

Although previous studies have shown positive effects of weight loss on the heart after bariatric surgery, most have been short term and have not specifically examined the effects of visceral fat reduction, wrote the investigators.

“We are in the middle of an increasing epidemic of obesity worldwide, but particularly in the United States, where it is currently projected that one in two adults will be obese by 2030,” added Dr. Borlaug of Mayo Clinic, Rochester, Minn. “Heart failure with preserved ejection fraction (HFpEF) is growing in tandem, and numerous recent studies have shown that obesity is one of the strongest risk factors for developing HFpEF, and that the severity of HFpEF is intimately linked to excess body fat. This suggests that therapies to reduce body fat could improve the cardiac abnormalities that cause HFpEF, which was our focus in this study,” he explained.

In the study, published in the Journal of the American College of Cardiology, the researchers reviewed echocardiography data from 213 obese patients before and more than 180 days after bariatric surgery. They also measured abdominal visceral adipose tissue (VAT) of 52 patients via computed tomography. The average age of the patients was 54 years, the average body mass index was 45 kg/m², and 67% were women. Comorbidities included hypertension, diabetes, dyslipidemia, and obstructive sleep apnea.

The primary outcome was changes in cardiac structure and function.

After a median follow-up of 5.3 years, patients overall averaged a 23% reduction in body weight and a 22% reduction in BMI. In the 52 patients with abdominal scans, the VAT area decreased by 30% overall. Changes in left ventricular mass were significantly correlated to changes in the VAT.

Epicardial adipose thickness decreased by 14% overall. Left and right ventricular longitudinal strains improved at follow-up, but left atrial strain deteriorated, the researchers noted.

Although the mechanism of action remains unclear, the results suggest that left ventricular remodeling was associated with visceral adiposity rather than subcutaneous fat, the researchers wrote.

They also found that right ventricular strain was negatively correlated with VAT, but not with body weight or BMI.

“These findings suggest that weight loss, particularly reduction in visceral adiposity, benefits [right ventricular] structure and function in a manner akin to that observed in the [left ventricle],” the researchers noted.

Some surprises and limitations

Dr. Borlaug said he found some, but not all, of the results surprising. “Earlier studies had shown evidence for benefit from weight loss on cardiac structure and function, but had been limited by smaller sample sizes, shorter durations of evaluation, and variable methods used,” he said in an interview.

The findings that strain imaging showed both left and right ventricular function improved while EF declined “shows some of the problems with using EF, as it is affected by chamber size and geometry. We have previously shown that patients with HFpEF display an increase in fat around the heart, and this affects cardiac function and interaction between the left and right sides of the heart, so we expected to see that this fat depot would be reduced, and this was indeed the case,” Dr. Borlaug added.

In the current study, “visceral fat was most strongly tied to the heart remodeling in obesity, and changes in visceral fat were most strongly tied to improvements in cardiac structure following weight loss,” Dr. Borlaug told this news organization. “This further supports this concept that excess visceral fat plays a key role in HFpEF, especially in the abdomen and around the heart,” he said.

However, “The biggest surprise was the discordant effects in the left atrium,” Dr. Borlaug said. “Left atrial remodeling and dysfunction play a crucial role in HFpEF as well, and we expected that this would improve following weight loss, but in fact we observed that left atrial function deteriorated, and other indicators of atrial myopathy worsened, including higher estimates of left atrial pressures and increased prevalence of atrial fibrillation,” he said.

This difference emphasizes that weight loss may not address all abnormalities that lead to HFpEF, although a key limitation of the current study was the lack of a control group of patients with the same degree of obesity and no weight-loss intervention, and the deterioration in left atrial function might have been even greater in the absence of weight loss, Dr. Borlaug added.
 

Larger numbers support effects

Previous research shows that structural heart changes associated with obesity can be reversed through weight loss, but the current study fills a gap by providing long-term data in a larger sample than previously studied, wrote Paul Heidenreich, MD, of Stanford (Calif.) University in an accompanying editorial).

“There has been uncertainty regarding the prolonged effect of weight loss on cardiac function; this study was larger than many prior studies and provided a longer follow-up,” Dr. Heidenreich said in an interview.

“One unusual finding was that, while weight loss led to left ventricle reverse remodeling (reduction in wall thickness), the same effect was not seen for the left atrium; the left atrial size continued to increase,” he said. “I would have expected the left atrial changes to mirror the changes in the left ventricle,” he noted.

The findings support the greater cardiac risk of visceral vs. subcutaneous adipose tissue, and although body mass index will retain prognostic value, measures of central obesity are more likely predictors of cardiac structural changes and events and should be reported in clinical studies, Dr. Heidenreich wrote.

However, “We need a better understanding of the factors that influence left atrial remodeling and reverse remodeling,” Dr. Heidenreich told this news organization. “While left ventricular compliance and pressure play a role, there are other factors that need to be elucidated,” he said.

 

Studies in progress may inform practice

The current data call for further study to test novel treatments to facilitate weight loss in patients with HFpEF and those at risk for HFpEF, and some of these studies with medicines are underway, Dr. Borlaug said in the interview.

“Until such studies are completed, we will not truly understand the effects of weight loss on the heart, but the present data certainly provide strong support that patients who have obesity and HFpEF or are at risk for HFpEF should try to lose weight through lifestyle interventions,” he said. 

Whether the cardiac changes seen in the current study would be different with nonsurgical weight loss remains a key question because many obese patients are reluctant to undergo bariatric surgery, Dr. Borlaug said. “We cannot assess whether the effects would differ with nonsurgical weight loss, and this requires further study,” he added.

As for additional research, “Randomized, controlled trials of weight-loss interventions, with appropriate controls and comprehensive assessments of cardiac structure, function, and hemodynamics will be most informative,” said Dr. Borlaug. “Larger trials powered to evaluate cardiovascular outcomes such as heart failure hospitalization or cardiovascular death also are critically important to better understand the role of weight loss to treat and prevent HFpEF, the ultimate form of obesity-related heart disease,” he emphasized.

The study was supported in part by grants to lead author Dr. Hidemi Sorimachi of the Mayo Clinic from the Uehara Memorial Foundation, Japan, and to corresponding author Dr. Borlaug from the National Institutes of Health. Dr. Borlaug also disclosed previous grants from National Institutes of Health/National Heart, Lung, and Blood Institute, AstraZeneca, Corvia, Medtronic, GlaxoSmithKline, Mesoblast, Novartis, and Tenax Therapeutics; and consulting fees from Actelion, Amgen, Aria, Axon Therapies, Boehringer Ingelheim, Edwards Lifesciences, Eli Lilly, Imbria, Janssen, Merck, Novo Nordisk, and VADovations. Dr. Heidenreich had no financial disclosures.