on the basis of clinical examination , electron microscopy of the myocardial ultrastructure , and investigation of the myocardial metabolism ( contents of glucose , lactate , pyruvate , free fatty acids , catecholamines , and oxygen in arterial and venous blood flowing out of the myocardium ) , they come to the conclusion that internal cold cardioplegia efficiently protects the myocardium during aortocoronary bypass and secures favourable conditions for the development of anastomoses between coronary arteries and venous shunts .
C0010055
aortocoronary bypass
C0205042
coronary