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CLINICAL TRIAL
JOURNAL ARTICLE
RESEARCH SUPPORT, U.S. GOV'T, P.H.S.
Electrocardiographic and clinical criteria for recognition of acute myocardial infarction based on analysis of 3,697 patients.
American Journal of Cardiology 1983 November 2
Over a 34.5-month period, all admissions to 5 university hospital coronary care units were screened for eligibility for the Multicenter Investigation of the Limitation of Infarct Size (MILIS), an ongoing study of the effects of hyaluronidase, propranolol and placebo on myocardial infarct (MI) size. Of 3,697 patients with greater than or equal to 30 minutes of discomfort that was thought to reflect myocardial ischemia who were assessed for the presence or absence of certain electrocardiographic abnormalities at the time of hospital admission, the electrocardiogram was considered predictive of acute MI if greater than or equal to 1 of the following abnormalities was present: new or presumably new Q waves (greater than or equal to 30 ms wide and 0.20 mV deep) in at least 2 of the 3 diaphragmatic leads (II, III, aVF), or in at least 2 of the 6 precordial leads (V1 to V6), or in I and aVL; new or presumably new ST-segment elevation or depression of greater than or equal to 0.10 mV in 1 of the same lead combinations; or complete left bundle branch block. In the screened population, the diagnostic sensitivity of the electrocardiographic criteria was 81%, whereas the overall infarct rate in the total population screened was 49%. The diagnostic specificity of these entry criteria was 69% and the predictive value 72%.(ABSTRACT TRUNCATED AT 250 WORDS)
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