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Nitrates in heart failure

U Elkayam1

  • 1Department of Medicine, University of Southern California School of Medicine, Los Angeles.

Cardiology Clinics
|February 1, 1994
PubMed
Summary
This summary is machine-generated.

Organic nitrates effectively treat chronic congestive heart failure by improving hemodynamics and survival. However, nitrate tolerance and resistance can limit their effectiveness, warranting further research.

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Area of Science:

  • Cardiology
  • Pharmacology

Background:

  • Organic nitrates are established treatments for chronic congestive heart failure.
  • These medications demonstrate positive hemodynamic effects during rest and exercise.

Purpose of the Study:

  • To evaluate the efficacy of organic nitrates in managing congestive heart failure.
  • To investigate the combined effects of nitrates with hydralazine.
  • To explore limitations such as nitrate tolerance and resistance.

Main Methods:

  • Review of existing literature on organic nitrate therapy in heart failure.
  • Analysis of hemodynamic effects at rest and during various exercise types.
  • Assessment of outcomes including exercise tolerance, ejection fraction, and survival rates.

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Main Results:

  • Nitrates, particularly with hydralazine, improve exercise tolerance, left ventricular ejection fraction, and survival.
  • Dose-related nitrate resistance and tolerance are identified as key limitations.
  • Further investigation is needed for monotherapy and in patients on ACE inhibitors.

Conclusions:

  • Organic nitrates are beneficial in congestive heart failure management, especially in combination therapy.
  • Understanding and mitigating nitrate tolerance is crucial for sustained therapeutic benefit.
  • Further research is required to define optimal use in specific patient populations.