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Volume 338:1785-1792 June 18, 1998 Number 25 Next

	Full Text PDF Editorial by Lange, R. A. Letters Add to Personal Archive Add to Citation Manager Notify a Friend E-mail When Cited Related Article Related Article by Malawer, M. M. PubMed Citation

ABSTRACT

Background Non–Q-wave myocardial infarction is usually managed according to an "invasive" strategy (i.e., one of routine coronary angiography followed by myocardial revascularization).

Methods We randomly assigned 920 patients to either "invasive" management (462 patients) or "conservative" management, defined as medical therapy and noninvasive testing, with subsequent invasive management if indicated by the development of spontaneous or inducible ischemia (458 patients), within 72 hours of the onset of a non–Q-wave infarction. Death or nonfatal infarction made up the combined primary end point.

Results During an average follow-up of 23 months, 152 events (80 deaths and 72 nonfatal infarctions) occurred in 138 patients who had been randomly assigned to the invasive strategy, and 139 events (59 deaths and 80 nonfatal infarctions) in 123 patients assigned to the conservative strategy (P=0.35). Patients assigned to the invasive strategy had worse clinical outcomes during the first year of follow-up. The number of patients with one of the components of the primary end point (death or nonfatal myocardial infarction) and the number who died were significantly higher in the invasive-strategy group at hospital discharge (36 vs. 15 patients, P=0.004, for the primary end point; 21 vs. 6, P=0.007, for death), at one month (48 vs. 26, P=0.012; 23 vs. 9, P=0.021), and at one year (111 vs. 85, P=0.05; 58 vs. 36, P=0.025). Overall mortality during follow-up did not differ significantly between patients assigned to the conservative-strategy group and those assigned to the invasive-strategy group (hazard ratio, 0.72; 95 percent confidence interval, 0.51 to 1.01).

Conclusions Most patients with non–Q-wave myocardial infarction do not benefit from routine, early invasive management consisting of coronary angiography and revascularization. A conservative, ischemia-guided initial approach is both safe and effective.

Source Information

From the Veterans Affairs Medical Center and the State University of New York Health Science Center, Syracuse (W.E.B.); the Veterans Affairs Medical Center, San Antonio, Tex. (R.A.O.); the Veterans Affairs Medical Center, Albuquerque, N.M. (M.H.C.); the Veterans Affairs Medical Center, Houston (A.S.B.); the Veterans Affairs Medical Center, Fresno, Calif. (P.C.D.); the James A. Haley Veterans Affairs Medical Center, Tampa, Fla. (R.G.Z); the Veterans Affairs Medical Center, Cincinnati (L.F. W.); Jewish Hospital, Washington University School of Medicine, St. Louis (R.E.K.); the Veterans Affairs Medical Center, Gainesville, Fla. (C.J.P.); the Jerry L. Pettis Veterans Affairs Medical Center, Loma Linda, Calif. (D.R.F.); and the Department of Veterans Affairs Cooperative Studies Program Coordinating Center, Palo Alto, Calif. (B.K.C., P. W.L.).

Address reprint requests to Dr. Boden at the Medical Service, Veterans Affairs Healthcare Network of Upstate New York, 800 Irving Ave., Syracuse, NY 13210.

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Management of Non–Q-Wave Myocardial Infarction
Bedell S. E., Graboys T. B., Ravid S., Thompson R. C., Roe M. T., Bowen T. E., Topol E. J., Huitink J. M., Bax J. J., Boden W. E., O'Rourke R. A., Crawford M. H.
Extract | Full Text  
N Engl J Med 1998; 339:1395-1398, Nov 5, 1998. Correspondence

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