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Original Article
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Volume 337:1118-1123 October 16, 1997 Number 16
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A Comparison of Reteplase with Alteplase for Acute Myocardial Infarction
The Global Use of Strategies to Open Occluded Coronary Arteries (GUSTO III) Investigators

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ABSTRACT

Background Reteplase (recombinant plasminogen activator), a mutant of alteplase tissue plasminogen activator, has a longer half-life than its parent molecule and produced superior angiographic results in pilot studies of acute myocardial infarction. In this large clinical trial, we compared the efficacy and safety of these two thrombolytic agents.

Methods A total of 15,059 patients from 807 hospitals in 20 countries who presented within 6 hours after the onset of symptoms with ST-segment elevation or bundle-branch block were randomly assigned in a 2:1 ratio to receive reteplase, in two bolus doses of 10 MU each given 30 minutes apart, or an accelerated infusion of alteplase, up to 100 mg infused over a period of 90 minutes. The primary hypothesis was that mortality at 30 days would be significantly lower with reteplase.

Results The mortality rate at 30 days was 7.47 percent for reteplase and 7.24 percent for alteplase (adjusted P = 0.54; odds ratio, 1.03; 95 percent confidence interval, 0.91 to 1.18). The 95 percent confidence interval for the absolute difference in mortality rates was -1.1 to 0.66 percent. Stroke occurred in 1.64 percent of patients treated with reteplase and in 1.79 percent of those treated with alteplase (P = 0.50). The respective rates of the combined end point of death or nonfatal, disabling stroke were 7.89 percent and 7.91 percent (P =0.97; odds ratio, 1.0; 95 percent confidence interval, 0.88 to 1.13).

Conclusions As compared with an accelerated infusion of alteplase, reteplase, although easier to administer, did not provide any additional survival benefit in the treatment of acute myocardial infarction. Other results, particularly for the combined end point of death or nonfatal, disabling stroke, were remarkably similar for the two plasminogen activators.


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Dr. Topol, as study chairman, assumes full responsibility for the overall content and integrity of the manuscript.

Address reprint requests to Dr. Eric J. Topol at the Cleveland Clinic Foundation, Dept. of Cardiology, F25, 9500 Euclid Ave., Cleveland, OH 44195.

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Related Letters:

Thrombolytic Therapy for Myocardial Infarction
Frei S., Brophy J., Andreotti F., Thron C. D., Topol E. J., Califf R. M., Wilcox R., The GUSTO III Steering Committee , Van de Werf F., The COBALT Investigators , Ware J. H., Antman E. M.
Extract | Full Text  
N Engl J Med 1998; 338:545-548, Feb 19, 1998. Correspondence

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