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Relative Efficacy of Vasodilator Therapy in Chronic Congestive Heart FailureImplications of Randomized Trials
Cynthia D. Mulrow, MD, MSc;
John P. Mulrow, MD;
William D. Linn, PharmD;
Christine Aguilar, MD;
Gilbert Ramirez, DrPH
JAMA. 1988;259(23):3422-3426.
Abstract
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We examined existing evidence concerning the relative efficacy of various vasodilator agents in chronic congestive heart failure. Only randomized placebo-controlled trials with clinical end points and treatment durations of four weeks or more were selected from an exhaustive search of the English-language medical literature. Twenty-eight trials involving 1976 patients were found. Treatment durations of the trials varied from one month to two years. Patients with symptomatic heart failure despite digitalis and diuretic therapy were studied; most were middle-aged men and approximately half had coronary artery disease. Results of the trials were appraised by three independent observers, and mortality and functional status outcomes were pooled in a metaanalysis. All vasodilator agents except hydralazine hydrochloride were associated with improvements in functional status. Angiotensin converting-enzyme inhibitors were the only agents associated with both decreased mortality (odds ratio, 0.51; 95% confidence interval, 0.34 to 0.75) and improved functional status (odds ratio, 4.53; 95% confidence interval, 3.46 to 5.92). The optimal timing for initiation of these agents was not established.
(JAMA 1988;259:3422-3426)
Author Affiliations
From the Divisions of General Internal Medicine (Drs C. D. Mulrow and Aguilar) and Cardiology (Dr J. P. Mulrow), Department of Medicine, The University of Texas Health Science Center at San Antonio; the College of Pharmacy (Dr Linn), The University of Texas at Austin; and the Department of Preventive Medicine (Dr Ramirez), The Academy of Health Sciences at Fort Sam Houston, San Antonio.
Footnotes
Reprint requests to Ambulatory Care (11C), Audie L. Murphy Memorial Veterans' Hospital, 7400 Merton Minter Blvd, San Antonio, TX 78248 (Dr C. D. Mulrow).
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