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[Nitrate derivatives and cardiac insufficiency].
Archives Des Maladies Du Coeur Et Des Vaisseaux
|April 1, 1992
Summary
Nitrate vasodilators effectively reduce pulmonary congestion and improve exercise capacity. Continuous therapy may lead to tolerance, which can be managed by intermittent drug use.
Area of Science:
- Pharmacology
- Cardiovascular Medicine
Context:
- Nitrate derivatives are established venous vasodilators used to manage pulmonary congestion.
- Previous studies (Veterans I and II) demonstrated benefits in mortality reduction and exercise capacity when combined with hydralazine.
Purpose:
- To review the efficacy of nitrate derivatives in cardiovascular conditions.
- To explore the mechanisms and management of nitrate tolerance.
- To evaluate the potential of combining nitrates with angiotensin-converting enzyme (ACE) inhibitors.
Summary:
- Nitrate vasodilators effectively alleviate symptoms of pulmonary congestion.
- While beneficial for exercise capacity, their mortality reduction in heart failure may be less significant than ACE inhibitors.
- Nitrate tolerance, linked to continuous high-dose therapy and neuro-hormonal factors, can be mitigated by intermittent administration.
Impact:
- Highlights the therapeutic role of nitrates in managing heart failure symptoms and improving exercise tolerance.
- Suggests strategies to overcome nitrate tolerance, enhancing their clinical utility.
- Proposes the combination of nitrates and ACE inhibitors as a promising therapeutic approach for cardiovascular diseases.