ALBERT H. DOUGLAS, M.D., F.A.C.P.; JERALD S. KALTER, M.D.
The precordial leads have justifiably gained increasing importance in the past decade and considerable knowledge has accumulated concerning the significance of the various deflections in the standard positions. These leads are now used routinely to supplement the information given by the limb leads and, more particularly, to aid in the localization of myocardial infarcts, bundle branch block, and pathologic processes involving primarily the right or the left side of the heart. The localizing value of precordial leads results from the well known fact1 that an exploring electrode on the
anterior chest wall produces an electrocardiogram which resembles that of the
DOUGLAS AH, KALTER JS. THE EFFECT ON THE PRECORDIAL ELECTROCARDIOGRAM OF INSULATING AREAS OF THE ANTERIOR CHEST WALL1. Ann Intern Med. ;30:799–809. doi: 10.7326/0003-4819-30-4-799
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Published: Ann Intern Med. 1949;30(4):799-809.
Cardiac Diagnosis and Imaging, Cardiology.
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