Abstract
The hemodynamic changes at the time of right or left ventricular pacemaking, through a wide range of pacing rate, were compared in 4patients who long term ventricular pacings have been performed. On the otherhand, the same study was done in 9dogs with left thoracotomy, or with ligation of the left anterior descending coronary artery.
Consequently, cardiac output at the time of the left ventricular pacing revealed higher value than that of the right ventricular pacing in 3patients with congestive heart failure. But no significant differences of cardiac output were observed in lpatient without heart failure, and besides, in all dogs at the each ventricular pacing above described.
