American Journal of Epidemiology Vol. 129, No. 1: 105-111
Copyright © 1989 by The Johns Hopkins University School of Hygiene and Public Health
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REGRESSION OF Q WAVES FOLLOWING ACUTE MYOCARDIAL INFARCTION
From the Honolulu Heart Program, Kuakini Medical Center 347 N. Kuakini Street, Honolulu, HI 96817
Send reprint requests to Dr. Ellen B. Marcus at this address.
Marcus, E. B. (Honolulu Heart Program, Honolulu, HI 96817), K. Yano, and C. J. MacLean. Regression of Q waves following acute myocardial infarction. Am J Epidemiol 1989;129:10511.
The predIctors and effects of Q wave regression following acute Q wave myocardial infarction were examined in 19651982 In 127 Japanese-American men who participated In a prospective epidemiologic study of cardiovascular disease. Of these 127 men, 53 (42%) showed total regression of Q waves, 17 (13%) showed partial regression, and 57 (45%) showed no Q wave regression following acute myocardlal Infarction. Age at myocardlal Infarction and location of myocardlal Infarction did not predict which men would undergo Q wave regression. Q wave status after myocardial infarction (total, partial, or no regres sion) did not predict survival or recurrence of myocardlal infarction. This study found that a substantial proportion of acute myocardial infarction cases undergo Q wave regression, indicating that clinicians and investigators alike require additional evidence to Identify people with previous myocardial Infarction.
electrocardiogram; myocardial; infarction; prospective studies
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