Myocardial Protection During Aortic Valve Replacement

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Abstract
Peri-operative myocardial damage during aortic valve replacement is evaluated by analysis of S-GOT [serum glutamic oxalo-acetic transaminase] and LDH [lactic dehydrogenase] in the early postoperative phase. Combining the mortality fiqures and enzyme changes postoperatively, it is demonstrated that the peri-operative myocardial damage is significantly lower in the group operated on under cold cardioplegia (after Bretschneider), than in the group operated on under normothermia or moderate hypothermia and induced ventricular fibrillation.