Effect of RVAD for Right Heart Failure Involved with Right Ventricular Infarction

Abstract

Right ventricular failure following right ventrieular infarction, by means of right coronary artery ligation using swine, was made. The RVAD and IABP was used to compare the influences on cardiac function and the right ventricular infarcted area. Right ventricular infarcted area was evaluated by epicardial mapping ECG and myocardial regional bloood flow.
It was found that in the cases using IABP, the effect of reducing the infarcted area due to diastolic augmentation was noted, but the effect on the right ventricular support was not so much expected, while in the cases using RVAD the right ventricular pre load was reduced and the right ventricular stroke work was decreased, and the effect of reducing the infarcted area was obseaved. In concomitant use of RVAD and IABP, the demand and supply balance of myocardial oxygen was maintained satisfactory, and it was considered that this convination mode could sulvage the ischemic right ventricular myocardium, and avoid cardiogenic shock.