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Title: Rationale and design of the third vasodilator-heart failure trial (V-HeFT III): felodipine as adjunctive therapy to enalapril and loop diuretics with or without digoxin in chronic congestive heart failure. V-HeFT III investigators. Author: Boden WE, Ziesche S, Carson PE, Conrad CH, Syat D, Cohn JN. Journal: Am J Cardiol; 1996 May 15; 77(12):1078-82. PubMed ID: 8644661. Abstract: Therapy with angiotensin-converting enzyme inhibitors and nonselective vasodilators (hydralazine and isosorbide dinitrate) has become accepted treatment in patients with symptomatic, chronic congestive heart failure (CHF), and has been demonstrated in large clinical trials to ameliorate symptoms, improve exercise performance, and reduce cardiac mortality. Nevertheless, the management of patients with CHF remains a therapeutic challenge. The second Vasodilator-Heart Failure Trial (V-HeFT II) showed that the average 2-year mortality with enalapril (18%) was significantly lower than that with hydralazine-isosorbide dinitrate (25%) but, somewhat surprisingly, the nonspecific vasodilators produced significantly more improvement in exercise performance and left ventricular function. Such data suggest that improvement in symptoms, hemodynamics, and survival may not be afforded by the use of a single class of vasodilator therapy, but might be optimized by the combined use of different agents. This report describes the rationale and design of V-HeFT III, a multicenter, prospective, randomized, double-blind, placebo-controlled trial comparing the effects of chronic oral extended-release felodipine (felodipine ER) 2.5 to 5 mg twice daily, when added to a stable regimen of enalapril and loop diuretics, with or without digoxin, on exercise performance, morbidity, and mortality in patients with New York Heart Association functional class II to III CHF followed for a minimum of 12 weeks. Felodipine is a second-generation dihydropyridine calcium antagonist with a high degree of vascular selectivity which, in the doses used in this study, exerts its systemic arterial effect by decreasing peripheral vascular resistance without producing negative inotropic effects. The results of V-HeFT III may shed important light on the role of additive vasodilator therapy in the management of patients with CHF.[Abstract] [Full Text] [Related] [New Search]