Basic clinical and procedural characteristics according to the type of surgery or the type of ECC.

Values are presented as total number of patients (percent) or mean ± standard deviation.*p- values >0.05 considered as non significant (ns).Definitions: CABG, coronary artery bypass grafting; VS, valve surgery; ECC, extracorporeal circulation; CECC, conventional extracorporeal circulation; MECC, minimized extracorporeal circulation; LOS, length of postoperative hospital stay.数据以患者总例数（百分比）或均值±标准差的形式呈现。*p值＞0.05视为无统计学意义（ns）。术语定义：CABG（冠状动脉旁路移植术，coronary artery bypass grafting）；VS（瓣膜手术，valve surgery）；ECC（体外循环，extracorporeal circulation）；CECC（常规体外循环，conventional extracorporeal circulation）；MECC（微创体外循环，minimized extracorporeal circulation）；LOS（术后住院时长，length of postoperative hospital stay）。