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  • Title: [Therapy for heart failure].
    Author: Just H.
    Journal: Ther Umsch; 2000 May; 57(5):313-20. PubMed ID: 10859991.
    Abstract:
    The treatment of congestive heart failure focuses on three steps: 1. Elimination of the precipitating cause or mechanism, and/or treatment of the underlying disease respectively. 2. Treatment of the failing heart syndrome itself. We shall concern ourselves with pharmacotherapy, omitting technical and surgical aspects. 3. Prophylactic treatment of complications, such as thromboembolism and arrhythmias. Drugs for the treatment of heart failure can be classified as follows: 1. Diuretics 2. Vasodilators 3. Neurohumoral Inhibitors 4. Inotropic drugs. Diuretics improve symptoms and exercise capacity and probably survival. They are the drug of first choice in acute and chronic heart failure. Potassium supplementation is necessary. Renal function needs to be monitored. The aldosterone antagonist spironolactone has probably important effects upon the myocardium. It retards fibrous tissue development and improves prognosis. Vasodilators unload the heart and improve contractile geometry and hemodynamics, thereby lessening symptoms. Prognosis, however, is not affected. They are indispensable in acute heart failure. In longterm treatment only the combination of nitrates with hydralazin has been shown to be effective. Angiotensin converting enzyme inhibitors combine vasodilation with neurohumoral inhibition. They are most effective in improving symptoms, exercise capacity and surviving chronic heart failure. If side effects (cough, allergy) prevent their use, then angiotensin II receptor antagonists can be used with equal benefit. However, both groups of drugs impair renal function and cannot be given in advanced renal failure or renal artery stenosis. Beta-receptor antagonists, previously considered contraindicated in heart failure are today amongst the most important drugs in heart failure. They improve survival and retard the need for cardiac transplantation in advanced failure. Their use, however, is rather difficult requiring extremely slow dose titration beginning with very low doses. Inotropic drugs are today mainly used in acute failure and cardiogenic shock. In longterm treatment only the digitalisglycosides have been shown to be effective in improving symptoms, exercise capacity and the general clinical course. Often antiarrhythmic treatment is necessary. Here amiodarone is the drug of choice today if beta blockers do not suffice. Prophylactic anticoagulation is indicated in all cases NYHA III and IV, with large hearts already in II. Future developments may include new inotropes, the ANP-system, and cytokines, as well as gene therapy for correction of myocardial phenotype change.
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