Abstract
Eighty-five adult cases whose cardiograms showed a predominantly negative deflection in lead Vg were divided into 6 groups on the basis of autopsy evidence of cardiac infarction, right, or combined, ventricular hypertrophy. The typical patterns of anterior infarction were less common when ventricular hypertrophy was present than when infarction occurred in the absence of right ventricular hypertrophy; and the cardiogram in the latter condition may closely simulate that of cardiac infarction.