抄録
Direct epicardial electrocardiograms were recorded in 97 cases of normal hearts and various heart diseases, and the patterns of the QRS complex of the chest lead electrocardiograms were analysed with normal heart, left or right ventricular hypertrophy, combined ventricular hypertrophy, and right bundle branch block. In the case of the left ventricular hypertrophy the left chest ECG agreed well with the direct epicardial ECG. In the case of right ventricular hypertrophy the right chest ECG may be a mere reflection of the potential variations at the base of the right ventricle or conus arteriosus. The right bundle branch block of the mitral stenosis appears to be not due to a genuine conduction disturbance but to represent the potential variations in the base of the right ventricle.
