Clinical studies on the assisted c-p bypass

Abstract

Twelve patients, nine with cardiac failure and three with respiratory failure, were treated with assisted cardiopulmonary bypass. One patient survived but the others died. Causes of death were cardiac failure in four patients, renal failure in four, cerebral damage in two, and bleeding in one.
A new roller pump of 275mm in diameter was made for the assisted bypass and a closed bypass circuit was used.
At present the assisted c-p bypass may be applied to the acute cardiac and pulmonary failure without any complications.
In cases of severe cardiopulmonary failure the assisted bypass with high flow perfusion is required to improve the total tissue circulation.
The blood damage mainly caused by pumping and the hemorrhagic tendency by heparin administration are the inevitable faults of the long time perfusion, and the minimization of these influences may lead to good results in cases of severe cardiopulmonary failure.