Article Type
Article
Changed
Tue, 09/26/2017 - 09:57
Display Headline
Should target natriuretic peptide levels be used for outpatient management of chronic heart failure?
Author(s)
Ahmed Ibrahim, MD
M. Motaz Baibars, MD, FACP
M. Chadi Alraies, MD, FACP
Guilherme H. Oliveira, MD

In the last few years, a number of randomized controlled trials have explored the value of using target levels of natriuretic peptides such as brain-type natriuretic peptide (BNP) and N-terminal BNP in the outpatient management of heart failure. Unfortunately, the results have been inconclusive.

RATIONALE FOR TARGETING NATRIURETIC PEPTIDE LEVELS

Heart failure causes devastating morbidity and death, yet its management is guided more often by subjective than by objective data.1 In other chronic conditions such as hypertension, diabetes mellitus, and hyperlipidemia, numerical targets for blood pressure, hemoglobin A1c, and low-density lipoprotein cholesterol levels are used to guide medical therapy, and lower rates of both morbidity and death have resulted.1 Extensive efforts have been undertaken to use natriuretic peptide levels to similarly guide heart failure therapy and improve outcomes.

LIMITATIONS TO TARGETING NATRIURETIC PEPTIDES

The relationship between natriuretic peptide levels and patient symptoms1 and outcomes2 is neither predictable nor linear, although the association between these levels and outcomes is stronger at the extremes, ie, at very low and very high levels.

Moreover, baseline levels vary significantly among people and within the same person, affected by factors such as genetic polymorphisms, 3 age, sex,4 body mass index,5 and other diseases, such as renal insufficiency.6

In addition, natriuretic peptide levels behave differently depending on the type of heart failure, rising much higher in systolic heart failure than in diastolic heart failure.7

ESTABLISHED USES OF MEASURING NATRIURETIC PEPTIDE LEVELS

Measuring natriuretic peptide levels has proven useful in diagnosing heart failure and in risk stratification of heart failure patients. BNP levels of less than 100 pg/mL practically exclude the diagnosis of heart failure (negative predictive value 89%),8 as do N-terminal BNP levels less than 300 pg/mL (negative predictive value 99%).9 Changes from baseline levels during acute hospitalization correlate with heart failure mortality rates, while elevated levels at discharge are associated with a higher risk of heart failure death and of readmission.10,11

NATRIURETIC PEPTIDES TO GUIDE THERAPY

Of the seven published clinical trials of therapy guided by natriuretic peptide levels, three were positive, three were negative, and one had mixed results.

Three positive trials

The Christchurch, New Zealand, trial12 (with 69 patients) found that there were fewer total cardiovascular events (death, hospital admission, or heart failure decompensation) at 9.5 months in the group randomized to receive treatment guided by the N-terminal BNP concentration than in the control group (19 vs 54, P = .02).

The STARS-BNP trial (Systolic Heart Failure Treatment Supported by BNP),13 with 220 patients, showed a significant reduction in the rate of deaths from heart failure and of readmission at 15 months in patients receiving BNP-guided treatment compared with controls (24% vs 52%, P < .001).

The PROTECT trial (Pro-B Type Natriuretic Peptide Outpatient Tailored Chronic Heart Failure Therapy),14 with 151 patients enrolled, showed a significant reduction in a composite of cardiovascular events (worsening heart failure, hospitalization for heart failure, acute coronary syndromes, ventricular arrhythmias, cerebral ischemia, and cardiovascular death) with N-terminal BNP guidance compared with standard care at a mean of 10 months of follow-up (58 events vs 100 events, P = .009). It also showed significant improvements in quality of life, left ventricular ejection fraction, and both left ventricular end-systolic and end-diastolic volume indexes with therapy guided by N-terminal BNP measurement. Moreover, therapy guided by N-terminal BNP was not associated with higher rates of renal dysfunction from more aggressive diuretic use.

 

 

Three negative trials

Conversely, three trials did not find significant reductions in rates of death or hospitalization-free survival between groups:

The STARBRITE trial (Strategies for Tailoring Advanced Heart Failure Regimens in the Outpatient Setting: Brain Natriuretic Peptide Versus the Clinical Congestion Score) (N = 130)15

The BATTLESCARRED trial (NT-proBNP-Assisted Treatment to Lessen Serial Cardiac Readmissions and Death) (N = 364)16

The PRIMA trial (Can Pro-brain-natriuretic Peptide Guided Therapy of Chronic Heart Failure Improve Heart Failure Morbidity and Mortality?) (N = 345).17

One trial with mixed results

The TIME-CHF (Trial of Intensified vs Standard Medical Therapy in Elderly Patients With Congestive Heart Failure),18 the largest of these trials to date (N = 499), did not show a survival benefit, but it did show a lower rate of hospitalization due to heart failure in the group receiving treatment guided by N-terminal BNP levels than in controls. Also, this study found that in the subset of patients younger than 75 years, therapy guided by N-terminal BNP levels reduced the risk of death and hospitalization from heart failure.

Why the different results in these studies?

Several reasons can be invoked to explain the heterogeneity of results in the studies mentioned above. Most importantly, the small sample sizes in these trials may have prevented differences from reaching statistical significance. Also, the inclusion criteria and methods varied considerably, with different natriuretic peptide targets, doses of medications, and treatment strategies.

WHAT IS THE CONCLUSION?

Although there are data to suggest that serial natriuretic peptide guidance can reduce the rates of hospitalization and death from heart failure in patients under age 75, there is not enough evidence to recommend routine measurements for the outpatient management of heart failure.

A 2009 focused update to the joint American College of Cardiology and American Heart Association 2005 guidelines19 concluded that using natriuretic peptide levels to guide heart failure therapy is not well established (class 2b, level of evidence C).

Measurement of natriuretic peptides can be useful in evaluating and risk-stratifying patients presenting in the urgent care setting in whom the clinical diagnosis of heart failure is uncertain. These measurements are to be viewed as part of the total evaluation but are not to be used in isolation to confirm or exclude the presence of heart failure or to monitor the patient for decompensation.

Natriuretic peptide measurement is not a substitute for the information derived from a good history (dyspnea, orthopnea, paroxysmal nocturnal dyspnea) and physical examination (eg, weight, jugular venous distention, crackles, a third heart sound, edema).

The consensus opinion remains that the favorable outcomes with natriuretic peptide guidance in clinical trials were due to better adherence and continuous up-titration of medications to maximally tolerated target doses of angiotensin-converting enzyme inhibitors and beta-blockers, in addition to closer follow-up of patients in those groups.20 This can be done without serial natriuretic peptide measurements.

References
  1. Bonow RO, Bennett S, Casey DE, et al; American College of Cardiology; American Heart Association Task Force on Performance Measures (Writing Committee to Develop Heart Failure Clinical Performance Measures); Heart Failure Society of America. ACC/AHA clinical performance measures for adults with chronic heart failure: a report of the American College of Cardiology/American Heart Association Task Force on Performance Measures (Writing Committee to Develop Heart Failure Clinical Performance Measures) endorsed by the Heart Failure Society of America. J Am Coll Cardiol 2005; 46:1144–1178.
  2. Packer M. Should B-type natriuretic peptide be measured routinely to guide the diagnosis and management of chronic heart failure? Circulation 2003; 108:2950–2953.
  3. Takeishi Y, Toriyama S, Takabatake N, et al. Linkage disequilibrium analyses of natriuretic peptide precursor B locus reveal risk haplotype conferring high plasma BNP levels. Biochem Biophys Res Commun 2007; 362:480–484.
  4. Redfield MM, Rodeheffer RJ, Jacobsen SJ, Mahoney DW, Bailey KR, Burnett JC. Plasma brain natriuretic peptide concentration: impact of age and gender. J Am Coll Cardiol 2002; 40:976–982.
  5. Wang TJ, Larson MG, Levy D, et al. Impact of obesity on plasma natriuretic peptide levels. Circulation 2004; 109:594–600.
  6. Anwaruddin S, Lloyd-Jones DM, Baggish A, et al. Renal function, congestive heart failure, and amino-terminal pro-brain natriuretic peptide measurement: results from the ProBNP Investigation of Dyspnea in the Emergency Department (PRIDE) Study. J Am Coll Cardiol 2006; 47:91–97.
  7. Iwanaga Y, Nishi I, Furuichi S, et al. B-type natriuretic peptide strongly reflects diastolic wall stress in patients with chronic heart failure: comparison between systolic and diastolic heart failure. J Am Coll Cardiol 2006; 47:742–748.
  8. Maisel AS, Krishnaswamy P, Nowak RM, et al; Breathing Not Properly Multinational Study Investigators. Rapid measurement of B-type natriuretic peptide in the emergency diagnosis of heart failure. N Engl J Med 2002; 347:161–167.
  9. Januzzi JL, Camargo CA, Anwaruddin S, et al. The N-terminal Pro-BNP investigation of dyspnea in the emergency department (PRIDE) study. Am J Cardiol 2005; 95:948–954.
  10. Bettencourt P, Azevedo A, Pimenta J, Friões F, Ferreira S, Ferreira A. N-terminal-pro-brain natriuretic peptide predicts outcome after hospital discharge in heart failure patients. Circulation 2004; 110:2168–2174.
  11. Logeart D, Thabut G, Jourdain P, et al. Predischarge B-type natriuretic peptide assay for identifying patients at high risk of re-admission after decompensated heart failure. J Am Coll Cardiol 2004; 43:635–641.
  12. Troughton RW, Frampton CM, Yandle TG, Espiner EA, Nicholls MG, Richards AM. Treatment of heart failure guided by plasma aminoterminal brain natriuretic peptide (N-BNP) concentrations. Lancet 2000; 355:1126–1130.
  13. Jourdain P, Jondeau G, Funck F, et al. Plasma brain natriuretic peptide-guided therapy to improve outcome in heart failure: the STARS-BNP Multicenter Study. J Am Coll Cardiol 2007; 49:1733–1739.
  14. Januzzi JL, Rehman SU, Mohammed AA, et al. Use of amino-terminal pro-B-type natriuretic peptide to guide outpatient therapy of patients with chronic left ventricular systolic dysfunction. J Am Coll Cardiol 2011; 58:1881–1891.
  15. Shah MR, Claise KA, Bowers MT, et al. Testing new targets of therapy in advanced heart failure: the design and rationale of the Strategies for Tailoring Advanced Heart Failure Regimens in the Outpatient Setting: BRain NatrIuretic Peptide Versus the Clinical CongesTion ScorE (STARBRITE) trial. Am Heart J 2005; 150:893–898.
  16. Lainchbury JG, Troughton RW, Strangman KM, et al. N-terminal pro-B-type natriuretic peptide-guided treatment for chronic heart failure: results from the BATTLESCARRED (NT-proBNP-Assisted Treatment To Lessen Serial Cardiac Readmissions and Death) trial. J Am Coll Cardiol 2009; 55:53–60.
  17. Eurlings LW, van Pol PE, Kok WE, et al. Management of chronic heart failure guided by individual N-terminal pro-B-type natriuretic peptide targets: results of the PRIMA (Can PRo-brain-natriuretic peptide guided therapy of chronic heart failure IMprove heart fAilure morbidity and mortality?) study. J Am Coll Cardiol 2010; 56:2090–2100.
  18. Pfisterer M, Buser P, Rickli H, et al; TIME-CHF Investigators. BNP-guided vs symptom-guided heart failure therapy: the Trial of Intensified vs Standard Medical Therapy in Elderly Patients With Congestive Heart Failure (TIME-CHF) randomized trial. JAMA 2009; 301:383–392.
  19. Hunt SA, Abraham WT, Chin MH, et al. 2009 focused update incorporated into the ACC/AHA 2005 Guidelines for the Diagnosis and Management of Heart Failure in Adults: a report of the American College of Cardiology Foundation/American Heart Association Task Force on Practice Guidelines: developed in collaboration with the International Society for Heart and Lung Transplantation. Circulation 2009; 119:e391–e479.
  20. O’Donoghue M, Braunwald E. Natriuretic peptides in heart failure: should therapy be guided by BNP levels? Nat Rev Cardiol 2010; 7:13–20.
Article PDF
media_15fec11_22.pdf
Author and Disclosure Information

Ahmed Ibrahim, MD
Case Western Reserve University, St. Vincent Charity Medical Center, Cleveland, OH

M. Motaz Baibars, MD, FACP
Case Western Reserve University, St. Vincent Charity Medical Center, Cleveland, OH

M. Chadi Alraies, MD, FACP
Department of Hospital Medicine, Cleveland Clinic

Guilherme H. Oliveira, MD
Section of Heart Failure, Department of Cardiovascular Medicine, Cleveland Clinic

Address: M. Chadi Alraies, MD, FACP, Department of Hospital Medicine, A13, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH 44195; e-mail alraiec@ccf.org.

Issue
Cleveland Clinic Journal of Medicine - 79(1)
Publications
Cleveland Clinic Journal of Medicine
Topics
Cardiology
Page Number
22-25
Sections
1-Minute Consult
Author(s)
Ahmed Ibrahim, MD
M. Motaz Baibars, MD, FACP
M. Chadi Alraies, MD, FACP
Guilherme H. Oliveira, MD
Author(s)
Ahmed Ibrahim, MD
M. Motaz Baibars, MD, FACP
M. Chadi Alraies, MD, FACP
Guilherme H. Oliveira, MD
Author and Disclosure Information

Ahmed Ibrahim, MD
Case Western Reserve University, St. Vincent Charity Medical Center, Cleveland, OH

M. Motaz Baibars, MD, FACP
Case Western Reserve University, St. Vincent Charity Medical Center, Cleveland, OH

M. Chadi Alraies, MD, FACP
Department of Hospital Medicine, Cleveland Clinic

Guilherme H. Oliveira, MD
Section of Heart Failure, Department of Cardiovascular Medicine, Cleveland Clinic

Address: M. Chadi Alraies, MD, FACP, Department of Hospital Medicine, A13, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH 44195; e-mail alraiec@ccf.org.

Author and Disclosure Information

Ahmed Ibrahim, MD
Case Western Reserve University, St. Vincent Charity Medical Center, Cleveland, OH

M. Motaz Baibars, MD, FACP
Case Western Reserve University, St. Vincent Charity Medical Center, Cleveland, OH

M. Chadi Alraies, MD, FACP
Department of Hospital Medicine, Cleveland Clinic

Guilherme H. Oliveira, MD
Section of Heart Failure, Department of Cardiovascular Medicine, Cleveland Clinic

Address: M. Chadi Alraies, MD, FACP, Department of Hospital Medicine, A13, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH 44195; e-mail alraiec@ccf.org.

Article PDF
media_15fec11_22.pdf
Article PDF
media_15fec11_22.pdf

In the last few years, a number of randomized controlled trials have explored the value of using target levels of natriuretic peptides such as brain-type natriuretic peptide (BNP) and N-terminal BNP in the outpatient management of heart failure. Unfortunately, the results have been inconclusive.

RATIONALE FOR TARGETING NATRIURETIC PEPTIDE LEVELS

Heart failure causes devastating morbidity and death, yet its management is guided more often by subjective than by objective data.1 In other chronic conditions such as hypertension, diabetes mellitus, and hyperlipidemia, numerical targets for blood pressure, hemoglobin A1c, and low-density lipoprotein cholesterol levels are used to guide medical therapy, and lower rates of both morbidity and death have resulted.1 Extensive efforts have been undertaken to use natriuretic peptide levels to similarly guide heart failure therapy and improve outcomes.

LIMITATIONS TO TARGETING NATRIURETIC PEPTIDES

The relationship between natriuretic peptide levels and patient symptoms1 and outcomes2 is neither predictable nor linear, although the association between these levels and outcomes is stronger at the extremes, ie, at very low and very high levels.

Moreover, baseline levels vary significantly among people and within the same person, affected by factors such as genetic polymorphisms, 3 age, sex,4 body mass index,5 and other diseases, such as renal insufficiency.6

In addition, natriuretic peptide levels behave differently depending on the type of heart failure, rising much higher in systolic heart failure than in diastolic heart failure.7

ESTABLISHED USES OF MEASURING NATRIURETIC PEPTIDE LEVELS

Measuring natriuretic peptide levels has proven useful in diagnosing heart failure and in risk stratification of heart failure patients. BNP levels of less than 100 pg/mL practically exclude the diagnosis of heart failure (negative predictive value 89%),8 as do N-terminal BNP levels less than 300 pg/mL (negative predictive value 99%).9 Changes from baseline levels during acute hospitalization correlate with heart failure mortality rates, while elevated levels at discharge are associated with a higher risk of heart failure death and of readmission.10,11

NATRIURETIC PEPTIDES TO GUIDE THERAPY

Of the seven published clinical trials of therapy guided by natriuretic peptide levels, three were positive, three were negative, and one had mixed results.

Three positive trials

The Christchurch, New Zealand, trial12 (with 69 patients) found that there were fewer total cardiovascular events (death, hospital admission, or heart failure decompensation) at 9.5 months in the group randomized to receive treatment guided by the N-terminal BNP concentration than in the control group (19 vs 54, P = .02).

The STARS-BNP trial (Systolic Heart Failure Treatment Supported by BNP),13 with 220 patients, showed a significant reduction in the rate of deaths from heart failure and of readmission at 15 months in patients receiving BNP-guided treatment compared with controls (24% vs 52%, P < .001).

The PROTECT trial (Pro-B Type Natriuretic Peptide Outpatient Tailored Chronic Heart Failure Therapy),14 with 151 patients enrolled, showed a significant reduction in a composite of cardiovascular events (worsening heart failure, hospitalization for heart failure, acute coronary syndromes, ventricular arrhythmias, cerebral ischemia, and cardiovascular death) with N-terminal BNP guidance compared with standard care at a mean of 10 months of follow-up (58 events vs 100 events, P = .009). It also showed significant improvements in quality of life, left ventricular ejection fraction, and both left ventricular end-systolic and end-diastolic volume indexes with therapy guided by N-terminal BNP measurement. Moreover, therapy guided by N-terminal BNP was not associated with higher rates of renal dysfunction from more aggressive diuretic use.

 

 

Three negative trials

Conversely, three trials did not find significant reductions in rates of death or hospitalization-free survival between groups:

The STARBRITE trial (Strategies for Tailoring Advanced Heart Failure Regimens in the Outpatient Setting: Brain Natriuretic Peptide Versus the Clinical Congestion Score) (N = 130)15

The BATTLESCARRED trial (NT-proBNP-Assisted Treatment to Lessen Serial Cardiac Readmissions and Death) (N = 364)16

The PRIMA trial (Can Pro-brain-natriuretic Peptide Guided Therapy of Chronic Heart Failure Improve Heart Failure Morbidity and Mortality?) (N = 345).17

One trial with mixed results

The TIME-CHF (Trial of Intensified vs Standard Medical Therapy in Elderly Patients With Congestive Heart Failure),18 the largest of these trials to date (N = 499), did not show a survival benefit, but it did show a lower rate of hospitalization due to heart failure in the group receiving treatment guided by N-terminal BNP levels than in controls. Also, this study found that in the subset of patients younger than 75 years, therapy guided by N-terminal BNP levels reduced the risk of death and hospitalization from heart failure.

Why the different results in these studies?

Several reasons can be invoked to explain the heterogeneity of results in the studies mentioned above. Most importantly, the small sample sizes in these trials may have prevented differences from reaching statistical significance. Also, the inclusion criteria and methods varied considerably, with different natriuretic peptide targets, doses of medications, and treatment strategies.

WHAT IS THE CONCLUSION?

Although there are data to suggest that serial natriuretic peptide guidance can reduce the rates of hospitalization and death from heart failure in patients under age 75, there is not enough evidence to recommend routine measurements for the outpatient management of heart failure.

A 2009 focused update to the joint American College of Cardiology and American Heart Association 2005 guidelines19 concluded that using natriuretic peptide levels to guide heart failure therapy is not well established (class 2b, level of evidence C).

Measurement of natriuretic peptides can be useful in evaluating and risk-stratifying patients presenting in the urgent care setting in whom the clinical diagnosis of heart failure is uncertain. These measurements are to be viewed as part of the total evaluation but are not to be used in isolation to confirm or exclude the presence of heart failure or to monitor the patient for decompensation.

Natriuretic peptide measurement is not a substitute for the information derived from a good history (dyspnea, orthopnea, paroxysmal nocturnal dyspnea) and physical examination (eg, weight, jugular venous distention, crackles, a third heart sound, edema).

The consensus opinion remains that the favorable outcomes with natriuretic peptide guidance in clinical trials were due to better adherence and continuous up-titration of medications to maximally tolerated target doses of angiotensin-converting enzyme inhibitors and beta-blockers, in addition to closer follow-up of patients in those groups.20 This can be done without serial natriuretic peptide measurements.

In the last few years, a number of randomized controlled trials have explored the value of using target levels of natriuretic peptides such as brain-type natriuretic peptide (BNP) and N-terminal BNP in the outpatient management of heart failure. Unfortunately, the results have been inconclusive.

RATIONALE FOR TARGETING NATRIURETIC PEPTIDE LEVELS

Heart failure causes devastating morbidity and death, yet its management is guided more often by subjective than by objective data.1 In other chronic conditions such as hypertension, diabetes mellitus, and hyperlipidemia, numerical targets for blood pressure, hemoglobin A1c, and low-density lipoprotein cholesterol levels are used to guide medical therapy, and lower rates of both morbidity and death have resulted.1 Extensive efforts have been undertaken to use natriuretic peptide levels to similarly guide heart failure therapy and improve outcomes.

LIMITATIONS TO TARGETING NATRIURETIC PEPTIDES

The relationship between natriuretic peptide levels and patient symptoms1 and outcomes2 is neither predictable nor linear, although the association between these levels and outcomes is stronger at the extremes, ie, at very low and very high levels.

Moreover, baseline levels vary significantly among people and within the same person, affected by factors such as genetic polymorphisms, 3 age, sex,4 body mass index,5 and other diseases, such as renal insufficiency.6

In addition, natriuretic peptide levels behave differently depending on the type of heart failure, rising much higher in systolic heart failure than in diastolic heart failure.7

ESTABLISHED USES OF MEASURING NATRIURETIC PEPTIDE LEVELS

Measuring natriuretic peptide levels has proven useful in diagnosing heart failure and in risk stratification of heart failure patients. BNP levels of less than 100 pg/mL practically exclude the diagnosis of heart failure (negative predictive value 89%),8 as do N-terminal BNP levels less than 300 pg/mL (negative predictive value 99%).9 Changes from baseline levels during acute hospitalization correlate with heart failure mortality rates, while elevated levels at discharge are associated with a higher risk of heart failure death and of readmission.10,11

NATRIURETIC PEPTIDES TO GUIDE THERAPY

Of the seven published clinical trials of therapy guided by natriuretic peptide levels, three were positive, three were negative, and one had mixed results.

Three positive trials

The Christchurch, New Zealand, trial12 (with 69 patients) found that there were fewer total cardiovascular events (death, hospital admission, or heart failure decompensation) at 9.5 months in the group randomized to receive treatment guided by the N-terminal BNP concentration than in the control group (19 vs 54, P = .02).

The STARS-BNP trial (Systolic Heart Failure Treatment Supported by BNP),13 with 220 patients, showed a significant reduction in the rate of deaths from heart failure and of readmission at 15 months in patients receiving BNP-guided treatment compared with controls (24% vs 52%, P < .001).

The PROTECT trial (Pro-B Type Natriuretic Peptide Outpatient Tailored Chronic Heart Failure Therapy),14 with 151 patients enrolled, showed a significant reduction in a composite of cardiovascular events (worsening heart failure, hospitalization for heart failure, acute coronary syndromes, ventricular arrhythmias, cerebral ischemia, and cardiovascular death) with N-terminal BNP guidance compared with standard care at a mean of 10 months of follow-up (58 events vs 100 events, P = .009). It also showed significant improvements in quality of life, left ventricular ejection fraction, and both left ventricular end-systolic and end-diastolic volume indexes with therapy guided by N-terminal BNP measurement. Moreover, therapy guided by N-terminal BNP was not associated with higher rates of renal dysfunction from more aggressive diuretic use.

 

 

Three negative trials

Conversely, three trials did not find significant reductions in rates of death or hospitalization-free survival between groups:

The STARBRITE trial (Strategies for Tailoring Advanced Heart Failure Regimens in the Outpatient Setting: Brain Natriuretic Peptide Versus the Clinical Congestion Score) (N = 130)15

The BATTLESCARRED trial (NT-proBNP-Assisted Treatment to Lessen Serial Cardiac Readmissions and Death) (N = 364)16

The PRIMA trial (Can Pro-brain-natriuretic Peptide Guided Therapy of Chronic Heart Failure Improve Heart Failure Morbidity and Mortality?) (N = 345).17

One trial with mixed results

The TIME-CHF (Trial of Intensified vs Standard Medical Therapy in Elderly Patients With Congestive Heart Failure),18 the largest of these trials to date (N = 499), did not show a survival benefit, but it did show a lower rate of hospitalization due to heart failure in the group receiving treatment guided by N-terminal BNP levels than in controls. Also, this study found that in the subset of patients younger than 75 years, therapy guided by N-terminal BNP levels reduced the risk of death and hospitalization from heart failure.

Why the different results in these studies?

Several reasons can be invoked to explain the heterogeneity of results in the studies mentioned above. Most importantly, the small sample sizes in these trials may have prevented differences from reaching statistical significance. Also, the inclusion criteria and methods varied considerably, with different natriuretic peptide targets, doses of medications, and treatment strategies.

WHAT IS THE CONCLUSION?

Although there are data to suggest that serial natriuretic peptide guidance can reduce the rates of hospitalization and death from heart failure in patients under age 75, there is not enough evidence to recommend routine measurements for the outpatient management of heart failure.

A 2009 focused update to the joint American College of Cardiology and American Heart Association 2005 guidelines19 concluded that using natriuretic peptide levels to guide heart failure therapy is not well established (class 2b, level of evidence C).

Measurement of natriuretic peptides can be useful in evaluating and risk-stratifying patients presenting in the urgent care setting in whom the clinical diagnosis of heart failure is uncertain. These measurements are to be viewed as part of the total evaluation but are not to be used in isolation to confirm or exclude the presence of heart failure or to monitor the patient for decompensation.

Natriuretic peptide measurement is not a substitute for the information derived from a good history (dyspnea, orthopnea, paroxysmal nocturnal dyspnea) and physical examination (eg, weight, jugular venous distention, crackles, a third heart sound, edema).

The consensus opinion remains that the favorable outcomes with natriuretic peptide guidance in clinical trials were due to better adherence and continuous up-titration of medications to maximally tolerated target doses of angiotensin-converting enzyme inhibitors and beta-blockers, in addition to closer follow-up of patients in those groups.20 This can be done without serial natriuretic peptide measurements.

References
  1. Bonow RO, Bennett S, Casey DE, et al; American College of Cardiology; American Heart Association Task Force on Performance Measures (Writing Committee to Develop Heart Failure Clinical Performance Measures); Heart Failure Society of America. ACC/AHA clinical performance measures for adults with chronic heart failure: a report of the American College of Cardiology/American Heart Association Task Force on Performance Measures (Writing Committee to Develop Heart Failure Clinical Performance Measures) endorsed by the Heart Failure Society of America. J Am Coll Cardiol 2005; 46:1144–1178.
  2. Packer M. Should B-type natriuretic peptide be measured routinely to guide the diagnosis and management of chronic heart failure? Circulation 2003; 108:2950–2953.
  3. Takeishi Y, Toriyama S, Takabatake N, et al. Linkage disequilibrium analyses of natriuretic peptide precursor B locus reveal risk haplotype conferring high plasma BNP levels. Biochem Biophys Res Commun 2007; 362:480–484.
  4. Redfield MM, Rodeheffer RJ, Jacobsen SJ, Mahoney DW, Bailey KR, Burnett JC. Plasma brain natriuretic peptide concentration: impact of age and gender. J Am Coll Cardiol 2002; 40:976–982.
  5. Wang TJ, Larson MG, Levy D, et al. Impact of obesity on plasma natriuretic peptide levels. Circulation 2004; 109:594–600.
  6. Anwaruddin S, Lloyd-Jones DM, Baggish A, et al. Renal function, congestive heart failure, and amino-terminal pro-brain natriuretic peptide measurement: results from the ProBNP Investigation of Dyspnea in the Emergency Department (PRIDE) Study. J Am Coll Cardiol 2006; 47:91–97.
  7. Iwanaga Y, Nishi I, Furuichi S, et al. B-type natriuretic peptide strongly reflects diastolic wall stress in patients with chronic heart failure: comparison between systolic and diastolic heart failure. J Am Coll Cardiol 2006; 47:742–748.
  8. Maisel AS, Krishnaswamy P, Nowak RM, et al; Breathing Not Properly Multinational Study Investigators. Rapid measurement of B-type natriuretic peptide in the emergency diagnosis of heart failure. N Engl J Med 2002; 347:161–167.
  9. Januzzi JL, Camargo CA, Anwaruddin S, et al. The N-terminal Pro-BNP investigation of dyspnea in the emergency department (PRIDE) study. Am J Cardiol 2005; 95:948–954.
  10. Bettencourt P, Azevedo A, Pimenta J, Friões F, Ferreira S, Ferreira A. N-terminal-pro-brain natriuretic peptide predicts outcome after hospital discharge in heart failure patients. Circulation 2004; 110:2168–2174.
  11. Logeart D, Thabut G, Jourdain P, et al. Predischarge B-type natriuretic peptide assay for identifying patients at high risk of re-admission after decompensated heart failure. J Am Coll Cardiol 2004; 43:635–641.
  12. Troughton RW, Frampton CM, Yandle TG, Espiner EA, Nicholls MG, Richards AM. Treatment of heart failure guided by plasma aminoterminal brain natriuretic peptide (N-BNP) concentrations. Lancet 2000; 355:1126–1130.
  13. Jourdain P, Jondeau G, Funck F, et al. Plasma brain natriuretic peptide-guided therapy to improve outcome in heart failure: the STARS-BNP Multicenter Study. J Am Coll Cardiol 2007; 49:1733–1739.
  14. Januzzi JL, Rehman SU, Mohammed AA, et al. Use of amino-terminal pro-B-type natriuretic peptide to guide outpatient therapy of patients with chronic left ventricular systolic dysfunction. J Am Coll Cardiol 2011; 58:1881–1891.
  15. Shah MR, Claise KA, Bowers MT, et al. Testing new targets of therapy in advanced heart failure: the design and rationale of the Strategies for Tailoring Advanced Heart Failure Regimens in the Outpatient Setting: BRain NatrIuretic Peptide Versus the Clinical CongesTion ScorE (STARBRITE) trial. Am Heart J 2005; 150:893–898.
  16. Lainchbury JG, Troughton RW, Strangman KM, et al. N-terminal pro-B-type natriuretic peptide-guided treatment for chronic heart failure: results from the BATTLESCARRED (NT-proBNP-Assisted Treatment To Lessen Serial Cardiac Readmissions and Death) trial. J Am Coll Cardiol 2009; 55:53–60.
  17. Eurlings LW, van Pol PE, Kok WE, et al. Management of chronic heart failure guided by individual N-terminal pro-B-type natriuretic peptide targets: results of the PRIMA (Can PRo-brain-natriuretic peptide guided therapy of chronic heart failure IMprove heart fAilure morbidity and mortality?) study. J Am Coll Cardiol 2010; 56:2090–2100.
  18. Pfisterer M, Buser P, Rickli H, et al; TIME-CHF Investigators. BNP-guided vs symptom-guided heart failure therapy: the Trial of Intensified vs Standard Medical Therapy in Elderly Patients With Congestive Heart Failure (TIME-CHF) randomized trial. JAMA 2009; 301:383–392.
  19. Hunt SA, Abraham WT, Chin MH, et al. 2009 focused update incorporated into the ACC/AHA 2005 Guidelines for the Diagnosis and Management of Heart Failure in Adults: a report of the American College of Cardiology Foundation/American Heart Association Task Force on Practice Guidelines: developed in collaboration with the International Society for Heart and Lung Transplantation. Circulation 2009; 119:e391–e479.
  20. O’Donoghue M, Braunwald E. Natriuretic peptides in heart failure: should therapy be guided by BNP levels? Nat Rev Cardiol 2010; 7:13–20.
References
  1. Bonow RO, Bennett S, Casey DE, et al; American College of Cardiology; American Heart Association Task Force on Performance Measures (Writing Committee to Develop Heart Failure Clinical Performance Measures); Heart Failure Society of America. ACC/AHA clinical performance measures for adults with chronic heart failure: a report of the American College of Cardiology/American Heart Association Task Force on Performance Measures (Writing Committee to Develop Heart Failure Clinical Performance Measures) endorsed by the Heart Failure Society of America. J Am Coll Cardiol 2005; 46:1144–1178.
  2. Packer M. Should B-type natriuretic peptide be measured routinely to guide the diagnosis and management of chronic heart failure? Circulation 2003; 108:2950–2953.
  3. Takeishi Y, Toriyama S, Takabatake N, et al. Linkage disequilibrium analyses of natriuretic peptide precursor B locus reveal risk haplotype conferring high plasma BNP levels. Biochem Biophys Res Commun 2007; 362:480–484.
  4. Redfield MM, Rodeheffer RJ, Jacobsen SJ, Mahoney DW, Bailey KR, Burnett JC. Plasma brain natriuretic peptide concentration: impact of age and gender. J Am Coll Cardiol 2002; 40:976–982.
  5. Wang TJ, Larson MG, Levy D, et al. Impact of obesity on plasma natriuretic peptide levels. Circulation 2004; 109:594–600.
  6. Anwaruddin S, Lloyd-Jones DM, Baggish A, et al. Renal function, congestive heart failure, and amino-terminal pro-brain natriuretic peptide measurement: results from the ProBNP Investigation of Dyspnea in the Emergency Department (PRIDE) Study. J Am Coll Cardiol 2006; 47:91–97.
  7. Iwanaga Y, Nishi I, Furuichi S, et al. B-type natriuretic peptide strongly reflects diastolic wall stress in patients with chronic heart failure: comparison between systolic and diastolic heart failure. J Am Coll Cardiol 2006; 47:742–748.
  8. Maisel AS, Krishnaswamy P, Nowak RM, et al; Breathing Not Properly Multinational Study Investigators. Rapid measurement of B-type natriuretic peptide in the emergency diagnosis of heart failure. N Engl J Med 2002; 347:161–167.
  9. Januzzi JL, Camargo CA, Anwaruddin S, et al. The N-terminal Pro-BNP investigation of dyspnea in the emergency department (PRIDE) study. Am J Cardiol 2005; 95:948–954.
  10. Bettencourt P, Azevedo A, Pimenta J, Friões F, Ferreira S, Ferreira A. N-terminal-pro-brain natriuretic peptide predicts outcome after hospital discharge in heart failure patients. Circulation 2004; 110:2168–2174.
  11. Logeart D, Thabut G, Jourdain P, et al. Predischarge B-type natriuretic peptide assay for identifying patients at high risk of re-admission after decompensated heart failure. J Am Coll Cardiol 2004; 43:635–641.
  12. Troughton RW, Frampton CM, Yandle TG, Espiner EA, Nicholls MG, Richards AM. Treatment of heart failure guided by plasma aminoterminal brain natriuretic peptide (N-BNP) concentrations. Lancet 2000; 355:1126–1130.
  13. Jourdain P, Jondeau G, Funck F, et al. Plasma brain natriuretic peptide-guided therapy to improve outcome in heart failure: the STARS-BNP Multicenter Study. J Am Coll Cardiol 2007; 49:1733–1739.
  14. Januzzi JL, Rehman SU, Mohammed AA, et al. Use of amino-terminal pro-B-type natriuretic peptide to guide outpatient therapy of patients with chronic left ventricular systolic dysfunction. J Am Coll Cardiol 2011; 58:1881–1891.
  15. Shah MR, Claise KA, Bowers MT, et al. Testing new targets of therapy in advanced heart failure: the design and rationale of the Strategies for Tailoring Advanced Heart Failure Regimens in the Outpatient Setting: BRain NatrIuretic Peptide Versus the Clinical CongesTion ScorE (STARBRITE) trial. Am Heart J 2005; 150:893–898.
  16. Lainchbury JG, Troughton RW, Strangman KM, et al. N-terminal pro-B-type natriuretic peptide-guided treatment for chronic heart failure: results from the BATTLESCARRED (NT-proBNP-Assisted Treatment To Lessen Serial Cardiac Readmissions and Death) trial. J Am Coll Cardiol 2009; 55:53–60.
  17. Eurlings LW, van Pol PE, Kok WE, et al. Management of chronic heart failure guided by individual N-terminal pro-B-type natriuretic peptide targets: results of the PRIMA (Can PRo-brain-natriuretic peptide guided therapy of chronic heart failure IMprove heart fAilure morbidity and mortality?) study. J Am Coll Cardiol 2010; 56:2090–2100.
  18. Pfisterer M, Buser P, Rickli H, et al; TIME-CHF Investigators. BNP-guided vs symptom-guided heart failure therapy: the Trial of Intensified vs Standard Medical Therapy in Elderly Patients With Congestive Heart Failure (TIME-CHF) randomized trial. JAMA 2009; 301:383–392.
  19. Hunt SA, Abraham WT, Chin MH, et al. 2009 focused update incorporated into the ACC/AHA 2005 Guidelines for the Diagnosis and Management of Heart Failure in Adults: a report of the American College of Cardiology Foundation/American Heart Association Task Force on Practice Guidelines: developed in collaboration with the International Society for Heart and Lung Transplantation. Circulation 2009; 119:e391–e479.
  20. O’Donoghue M, Braunwald E. Natriuretic peptides in heart failure: should therapy be guided by BNP levels? Nat Rev Cardiol 2010; 7:13–20.
Issue
Cleveland Clinic Journal of Medicine - 79(1)
Issue
Cleveland Clinic Journal of Medicine - 79(1)
Page Number
22-25
Page Number
22-25
Publications
Cleveland Clinic Journal of Medicine
Publications
Cleveland Clinic Journal of Medicine
Topics
Cardiology
Article Type
Article
Display Headline
Should target natriuretic peptide levels be used for outpatient management of chronic heart failure?
Display Headline
Should target natriuretic peptide levels be used for outpatient management of chronic heart failure?
Sections
1-Minute Consult
Disallow All Ads
Alternative CME
Article PDF Media