The standard heart-lung machine is a major trigger of systemic inflammatory reactions, hemodilution, coagulopathy or organ failure. The strict reduction of blood-artificial surface and blood-air contact might represent meaningful improvements of the extracorporeal technology with respect to organ preservation. The aim of this study is the evaluation of potential differences between a minimal extracorporeal circuit (MECC) and a conventional cardiopulmonary bypass (MOPS) system.
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Bloodloss
Timeframe: postoperative