The clinical study on myocardial protection in aged patients undergoing coronary artery bypass grafting / 中华老年医学杂志

ABSTRACT

Objective To compare the myocardial protective effect between off pump coronary artery bypass(OPCAB) and on pump coronary artery bypass in the aged. Methods Four five patients were randomly divided into 3 groupsoff pump coronary artery bypass (n=15),tepid blood cardioplegia group(n=15) and cold blood cardioplegia group (n=15).There was no statistical difference in heart function,sex,age and lesion of coronary artery .Venous blood samples were taken for determineing the serum concentration of creatine kinase MB isoenzyme(CK MB),troponin I perioperatively and the clinical situations were observed postoperatively. Results CK MB,troponin I release in beating group during and after bypass was lower than that in on pump groups( P