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February 1938, Vol 61, No. 2 >
ARTICLE | February 1938

FOUR LEAD ELECTROCARDIOGRAM IN CASES OF RECENT CORONARY OCCLUSION

A. BOHNING, M.D.; L. N. KATZ, M.D.
Arch Intern Med (Chic). 1938;61(2):241-284. doi:10.1001/archinte.1938.00180080083007.
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The value of electrocardiograms in cases of recent coronary occlusion has been definitely established. The added value of records obtained from leads with one electrode placed on the chest has recently come into prominence. Sufficient information has been published1 to establish a fair basis for their interpretation, and obscure points are rapidly being clarified. Accumulated evidence has indicated that the chest lead is often of definite assistance in determining the presence, the location and to some degree the age of myocardial infarcts. The published reports of a number of cases in which autopsies were performed furnish additional evidence of the accuracy of these electrocardiographic interpretations, but the significance of some details is still in controversy. Thus, some authors have stressed the contour of the T wave;2 others, the contour and direction of the QRS complex3 and still others, the appearance of the deviation in the ST

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