A Randomized Trial of Intravenous Tissue Plasminogen Activator for Acute Myocardial Infarction with Subsequent Randomization to Elective Coronary Angioplasty

Alan D. Guerci, Gary Gerstenblith, Jeffrey A. Brinker, Nisha C. Chandra, Sidney O. Gottlieb, Raymond D. Bahr, James L. Weiss, Edward P. Shapiro, John T. Flaherty, David E. Bush, Paul H. Chew, Sheldon H. Gottlieb, Henry R. Halperin, Pamela Ouyang, Gary D. Walford, William R. Bell, Anil K. Fatterpaker, Michaelene Llewellyn, Eric J. Topol, Bernadine HealyCynthia O. Siu, Lewis C. Becker, Myron L. Weisfeldt

Research output: Contribution to journalArticle

Abstract

Patients presenting within four hours of the onset of acute myocardial infarction were randomly assigned to receive 80 to 100 mg of recombinant human-tissue plasminogen activator (t-PA) intravenously over a period of three hours (n = 72) or placebo (n = 66). Administration of the study drug was followed by coronary arteriography, and candidates for percutaneous transluminal coronary angioplasty were randomly assigned either to undergo angioplasty on the third hospital day (n = 42) or not to undergo angioplasty during the 10-day study period (n = 43). The patency rates of the infarct-related arteries were 66 percent in the t-PA group and 24 percent in the placebo group. No fatal or intracerebral hemorrhages occurred, and episodes of bleeding requiring transfusion were observed in 7.6 percent of the placebo group and 9.8 percent of the t-PA group. As compared with the use of placebo, administration of t-PA was associated with a higher mean (±SEM) ejection fraction on the 10th hospital day (53.2±2.0 vs. 46.4±2.0 percent, P<0.02), an improved ejection fraction during the study period (+3.6±1.3 vs. -4.7±1.3 percentage points, P<0.0001), and a reduction in the prevalence of congestive heart failure from 33 to 14 percent (P<0.01). Angioplasty improved the response of the ejection fraction to exercise (+8.1±1.4 vs. +1.2±2.2 percentage points, P<0.02) and reduced the incidence of postinfarction angina from 19 to 5 percent (P<0.05), but did not influence the ejection fraction at rest. These data support an approach to the treatment of acute myocardial infarction that includes early intravenous administration of t-PA and deferred cardiac catheterization and coronary angioplasty. (N Engl J Med 1987; 317: 1613–8.), MORBIDITY and mortality due to acute myocardial infarction depend primarily on the size of the infarct and its correlate, residual left ventricular function. Although the treatment of acute myocardial infarction with intravenous streptokinase is associated with improved left ventricular function and reduced mortality in the hospital,1 2 3 this approach is limited in several ways. Angiographic studies have shown that intravenous streptokinase induces recanalization of the infarct-related artery in less than 50 percent of patients, even when administered within six hours of the onset of infarction.4 5 6 7 Since reduction of the size of the infarct and of mortality are predominantly, if not exclusively,…

Original languageEnglish (US)
Pages (from-to)1613-1618
Number of pages6
JournalNew England Journal of Medicine
Volume317
Issue number26
DOIs
StatePublished - Dec 24 1987

ASJC Scopus subject areas

  • Medicine(all)

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