Abstract
Temporary circulatory support with a variety of mechanical ventricular assists including IABP, ECMO, VAD with pneumatic pump and centrifugal pump had been undertaken in a total of 123 cases which were associated with severe postoperative cardiogenic shock in 1978-1989 at our institute. This paper describes their perioperative and long-term results. The IABP have been used in 78 patients(pts) and 790 of them could be weaned off the support and 51% survived and discharged from the hospital. The weaning and discharge ratio of the pneumatic VAD were 46% and 23% respectively and 22% and 11% for centrifugal pump. Long term follow up study of IABP cases demonstrated actuarial survival ratio of 82% at 5 years and 51% at 10 years, which were singnificantly low compared to the controlled group. Three survivors of LVAD have been observed for 1.5 to 5 postoperative years. A case after CABG for AMI demonstrated depressed left ventricular contractions with EF of 0.32. Other two cases showed satisfactory cardiac function.
