Combined ventricular hypertrophy was the commonest finding at autopsy in cases studied by cardiac partitioning. A large number of electrocardiographic deflections reflected left or right ventricular hypertrophy in cases with combined ventricular hypertrophy. However, no consistent electrocardiographic pattern was found, in keeping with the wide spread of combinations of left and right ventricular weights present in these cases. A division of the entire series into 6 subgroups resulted in the best correlation between the electocardiographic findings and the degree of left and right ventricular hypertrophy established at autopsy. The electrocardiograms in the cases with combined ventricular hypertrophy have been compared with those of normal subjects and those with isolated right ventricular hypertrophy.S. Afr. Med. J., 48, 1515 (1974)