Hemolysis in Extra-Corporeal Circulation is the essential problems in the cardiac surgery.
The purpose of this study is to clear up the cause of hemolysis during the E. C. C.
At first, the degree of hemolysis is evaluted in the techniques of E. C. C. and procedures of cardiac surgery.
Secondary, the influence of the conditions in circulatory tubes of extra-corporeal machine is studied experimentally.
After all, it was found that hemolysis was strikingly reduced with the increase of aortiecross clamping time.
And about the conditions of circulatory tubes, pressure gradient, especially the great negative pressure should be extremely avoidedo.
