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Original Article
Volume 341:1413-1419 November 4, 1999 Number 19
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Long-Term Benefit of Primary Angioplasty as Compared with Thrombolytic Therapy for Acute Myocardial Infarction
Felix Zijlstra, Ph.D., Jan C.A. Hoorntje, Ph.D., Menko-Jan de Boer, Ph.D., Stoffer Reiffers, Ph.D., Kor Miedema, Ph.D., Jan Paul Ottervanger, Ph.D., Arnoud W.J. van 't Hof, Ph.D., and Harry Suryapranata, Ph.D.

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ABSTRACT

Background As compared with thrombolytic therapy, primary coronary angioplasty results in a higher rate of patency of the infarct-related coronary artery, lower rates of stroke and reinfarction, and higher in-hospital or 30-day survival rates. However, the comparative long-term efficacy of these two approaches has not been carefully studied.

Methods We randomly assigned a total of 395 patients with acute myocardial infarction to treatment with angioplasty or intravenous streptokinase. Clinical information was collected for a mean (±SD) of 5±2 years, and medical charges associated with the two treatments were compared.

Results A total of 194 patients were assigned to undergo primary angioplasty, and 201 to receive streptokinase. Mortality was 13 percent in the angioplasty group, as compared with 24 percent in the streptokinase group (relative risk, 0.54; 95 percent confidence interval, 0.36 to 0.87). Nonfatal reinfarction occurred in 6 percent and 22 percent of the two groups, respectively (relative risk, 0.27; 95 percent confidence interval, 0.15 to 0.52). The combined incidence of death and nonfatal reinfarction was also lower among patients assigned to angioplasty than among those assigned to streptokinase, with a relative risk of 0.13 (95 percent confidence interval, 0.05 to 0.37) for early events (within the first 30 days) and a relative risk of 0.62 (95 percent confidence interval, 0.43 to 0.91) for late events (after 30 days). The rates of readmission for heart failure and ischemia were also lower among patients in the angioplasty group than among patients in the streptokinase group. Total medical charges per patient were lower in the angioplasty group ($16,090) than in the streptokinase group ($16,813, P=0.05).

Conclusions As compared with thrombolytic therapy with streptokinase, primary coronary angioplasty is associated with better clinical outcomes over five years.


Source Information

From the Departments of Cardiology (F.Z., J.C.A.H., M.-J.B., J.P.O., A.W.J.H., H.S.), Nuclear Medicine (S.R.), and Clinical Chemistry (K.M.), Hospital De Weezenlanden, Zwolle, the Netherlands.

Address reprint requests to Dr. Zijlstra at the Department of Cardiology, Hospital De Weezenlanden, Groot Wezenland 20, 8011 JW Zwolle, the Netherlands, or at v.derks{at}diagram-zwolle.nl.

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Related Letters:

Primary Angioplasty versus Thrombolysis for Acute Myocardial Infarction
Boersma E., Akkerhuis M., Simoons M. L., Zijlstra F., de Boer M.-J., Faxon D. P., Heger J. W.
Extract | Full Text  
N Engl J Med 2000; 342:890-892, Mar 23, 2000. Correspondence

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