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Original Article
Volume 336:1689-1697 June 12, 1997 Number 24
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Platelet Glycoprotein IIb/IIIa Receptor Blockade and Low-Dose Heparin during Percutaneous Coronary Revascularization
The EPILOG Investigators

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ABSTRACT

Background Blockade of the platelet glycoprotein IIb/IIIa receptor with abciximab (a monoclonal-antibody Fab fragment directed against the receptor) has been shown to diminish ischemic complications among patients undergoing high-risk coronary angioplasty or atherectomy but increases bleeding complications. The widespread applicability of this treatment is unknown, particularly in view of the observed risk of hemorrhage.

Methods In a prospective, double-blind trial, we randomly assigned patients undergoing urgent or elective percutaneous coronary revascularization at 69 centers to receive abciximab with standard-dose, weight-adjusted heparin (initial bolus of 100 U per kilogram of body weight); abciximab with low-dose, weight-adjusted heparin (initial bolus of 70 U per kilogram); or placebo with standard-dose, weight-adjusted heparin. The primary efficacy end point was death from any cause, myocardial infarction, or urgent revascularization within 30 days of randomization.

Results The trial was terminated at the first interim analysis, with 2792 of the planned 4800 patients enrolled. At 30 days, the composite event rate was 11.7 percent in the group assigned to placebo with standard-dose heparin; 5.2 percent in the group assigned to abciximab with low-dose heparin (hazard ratio, 0.43; 95 percent confidence interval, 0.30 to 0.60; P<0.001); and 5.4 percent in the group assigned to abciximab with standard-dose heparin (hazard ratio, 0.45; 95 percent confidence interval, 0.32 to 0.63; P<0.001). There were no significant differences among the groups in the risk of major bleeding, although minor bleeding was more frequent among patients receiving abciximab with standard-dose heparin.

Conclusions Inhibition of the platelet glycoprotein IIb/IIIa receptor with abciximab, together with low-dose, weight-adjusted heparin, markedly reduces the risk of acute ischemic complications in patients undergoing percutaneous coronary revascularization, without increasing the risk of hemorrhage.


Source Information

Dr. Lincoff, as principal investigator of the study, assumes overall responsibility for the content and integrity of the article.

Address reprint requests to Dr. A. Michael Lincoff at the Department of Cardiology, F-25, Cleveland Clinic Foundation, 9500 Euclid Ave., Cleveland, OH 44195.

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Related Letters:

Platelet Glycoprotein IIb/IIIa Receptor Blockade after Coronary Angioplasty
Khan S. S., Forrester J., Gambassi G., Landolfi R., Bernabei R., Lincoff A. M., Topol E. J., Califf R. M., Holmes D. R.
Extract | Full Text  
N Engl J Med 1997; 337:1243-1245, Oct 23, 1997. Correspondence

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