The Research Of Mitochondria Ultrastructures Of Myocardium In Beating Heart Surgery During Cardiopulmonary Bypass

objcctivcs This study is carried out to study the cardiac protection effect between Beating heart and ICCP.Vethod:26 patients were divided into two groups (13 patients in each group). Begin CPB ~. after CPB 35mm ?0mm, a piece of Myocardiuin was obtained and fixed in 2. 5% glutaraldehyde at 4 C for 2 hours. They were observed under H?00 electron microscope. According to Fi.axneng method, every mitochondria was graded on score 0? scale , Average score of 100 Mi tOctlon(1r ~.a per saii~1e was calculated.. Result:After CPB 35mm ,Mitochondria score of IcQP group was much higher than Beating heart group (1. 61?. 39 vs 1. 07?. 34, p(O. 05) ;After CPB 70mm , Mitochondria scare of ICCP group was much higher t.han Beating heart group (2. 87+0. 48 vs 2. 09 ?. 43, p