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210 patients representing the average type of cardiac disturbance present in adults, with a predominance of arteriosclerotic and hypertensive heart disease, were studied with varying combinations of two, three, or more leads to determine the screening potentialities of such groupings. Single leads are not highly efficient in detection of abnormalities. Leads 1, aVF, and V 5 or aVR, 3, and V 5 selected approximately 95% of the patients with disease. Two or three leads as a screening procedure do not establish the merit of such a procedure and do not evaluate the problem of false-positives in apparently normal persons.
William A. Sodeman (Sat,) studied this question.
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