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The Electrocardiogram in Myocardial Infarction.

Abraham Kagan, M.D., F.A.C.P.; Gary D. Friedman, M.D.; William B. Kannel, M.D. (Associate); and Thomas R. Dawber, M.D., F.A.C.P.
Ann Intern Med. 1964;60(2_Part_1):320. doi:10.7326/0003-4819-60-2-320_1
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This excerpt has been provided in the absence of an abstract.

Since 1949, 5,128 men and women initially free of evidence of coronary heart disease (CHD) have been followed up, principally by means of biennial examinations at a clinic set up for that purpose.

During the first 13 years of observation, 252 persons have developed manifestations of CHD, exclusive of angina pectoris. The presence at the time of the first examination of electrocardiographic (EKG) abnormalities nondiagnostic of CHD increased the risk of subsequent occurrence of myocardial infarction (MI) two- to threefold.

One hundred and twenty-three persons developed EKG-documented infarctions. There were 64 cases of anterior MI, 54 cases of posterior MI,


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