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Original Article
Volume 334:1349-1355 May 23, 1996 Number 21
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The Effect of Carvedilol on Morbidity and Mortality in Patients with Chronic Heart Failure
Milton Packer, M.D., Michael R. Bristow, M.D., Ph.D., Jay N. Cohn, M.D., Wilson S. Colucci, M.D., Michael B. Fowler, M.B., B.S., Edward M. Gilbert, M.D., Neil H. Shusterman, M.D., for The U.S. Carvedilol Heart Failure Study Group

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ABSTRACT

Background Controlled clinical trials have shown that beta-blockers can produce hemodynamic and symptomatic improvement in chronic heart failure, but the effect of these drugs on survival has not been determined.

Methods We enrolled 1094 patients with chronic heart failure in a double-blind, placebo-controlled, stratified program, in which patients were assigned to one of four treatment protocols on the basis of their exercise capacity. Within each of the four protocols patients with mild, moderate, or severe heart failure with left ventricular ejection fractions <=0.35 were randomly assigned to receive either placebo (n = 398) or the beta-blocker carvedilol (n = 696); background therapy with digoxin, diuretics, and an angiotensin-converting–enzyme inhibitor remained constant. Patients were observed for the occurrence of death or hospitalization for cardiovascular reasons during the following 6 months (12 months for the group with mild heart failure).

Results The overall mortality rate was 7.8 percent in the placebo group and 3.2 percent in the carvedilol group; the reduction in risk attributable to carvedilol was 65 percent (95 percent confidence interval, 39 to 80 percent; P<0.001). This finding led the Data and Safety Monitoring Board to recommend termination of the study before its scheduled completion. In addition, as compared with placebo, carvedilol therapy was accompanied by a 27 percent reduction in the risk of hospitalization for cardiovascular causes (19.6 percent vs. 14.1 percent, P = 0.036), as well as a 38 percent reduction in the combined risk of hospitalization or death (24.6 percent vs. 15.8 percent, P<0.001). Worsening heart failure as an adverse reaction during treatment was less frequent in the carvedilol group than in the placebo group.

Conclusions Carvedilol reduces the risk of death as well as the risk of hospitalization for cardiovascular causes in patients with heart failure who are receiving treatment with digoxin, diuretics, and an angiotensin-converting–enzyme inhibitor.


Source Information

From the College of Physicians and Surgeons, Columbia University, New York (M.P.); University of Colorado Health Sciences Center, Denver (M.R.B.); University of Minnesota Medical School, Minneapolis (J.N.C.); Boston University School of Medicine, Boston (W.S.C.); Stanford University School of Medicine, Palo Alto, Calif. (M.B.F.); University of Utah School of Medicine, Salt Lake City (E.M.G.); and SmithKline Beecham Pharmaceuticals, King of Prussia, Pa. (N.H.S.).

Address reprint requests to Dr. Packer at the Division of Circulatory Physiology, Columbia University College of Physicians and Surgeons, 630 W. 168th St., New York, NY 10032.

Full Text of this Article


Related Letters:

Carvedilol in Patients with Chronic Heart Failure
Moyé L. A., Abernethy D., von Olshausen K., Pop T., Berger J., Packer M., Cohn J. N., Colucci W. S.
Extract | Full Text  
N Engl J Med 1996; 335:1318-1320, Oct 24, 1996. Correspondence

Digoxin in Patients with Heart Failure
Umans V. A., Cornel J. H., Hic C., Soto J., Avendaño C., Vilchez F. G., Böhm M., Zoneraich S., Yusuf S., Gorlin R., Garg R., Packer M.
Extract | Full Text  
N Engl J Med 1997; 337:129-131, Jul 10, 1997. Correspondence

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