Abstract: Objective To observe myocardial protective effect of sevoflurane used in the whole process of cardiopulmonary bypass(CPB). Methods A total of 150 patients older than 18 years who underwent cardiac surgery under CPB in Fu wai Hospital from January 2010 to November 2011 were enrolled in this double-blind and randomized controlled study. All the patients were randomly divided into three groups:Sevoflurane pretreatment group (Group A,n=50),whole-process Sevoflurane group (Group B,n=50),and whole-process intravenous anesthesia group (Group C,n=50). Radial artery pressure and other hemodynamic parameters were continuously measured for all the patients. At following time points: CPB beginning (T1),aortic declamping (T2),3 hours after aortic declamping (T3),and 24 hours after aortic declamping (T4),serum concentrations of cardiac troponin I (cTnI) and other parameters were measured by enzyme-linked immunosorbent assay (ELISA). Results There were 31 males and 19 females at age of 60.43±3.24 years in group A,28 males and 22 females at age of 59.88±4.12 years in group B,31 males and 19 females at age of 58.76±3.87 years. There was no statistical difference in mean arterial pressure (MAP),central venous pressure (CVP),pulmonary artery wedge pressure (PAWP) and heart rate (HR) at respective time points among the 3 groups (P>0.05). At T1 and T2,there was no statistical difference in cardiac index (CI) among the 3 groups (P>0.05). At T3,there was no statistical difference in CI between Group A and Group C(F=3.382,P=0.845),but CI of Group B was significantly higher than that of Group A and C(F=3.382,3.382; P=0.033,0.020). At T4,CI of Group B was significantly higher than that of Group A and C (F=13.324,13.324; P=0.005,P=0.000),and CI of Group A was significantly higher than that of Group C (F=13.324,P=0.024). At T1 and T2,there was no statistical difference in serum concentrations of creatinine kinase MB (CK-MB),cTnI,interleukin-6 (IL-6) and tumor necrosis factor alpha (TNF-α) among the 3 groups (P>0.05). At T3 and T4,serum concentrations of CK-MB,TNF-α,IL-6 and cTnI of Group C were significantly higher than those of Group A,and serum concentrations of CK-MB,TNF-α,IL-6 and cTnI of Group A were significantly higher than those of Group B (F=531.616,5.410,3.5813,3.160,1.126,4.702,7.819,5.424,all P=0.000). Conclusion Sevoflurane used in the whole process of CPB has definite myocardial protective effect which is ber than that of Sevoflurane pretreatment.
Citation: HU Qiang,GAO Guodong,YU Kun,JIANG Fuqing,LONG Cun.. Myocardial Protection of Sevoflurane Used in the Whole Process of Cardiopulmonary Bypass:A RandomizControlled Trial HU Qiang,GAO Guo-dong,YU Kun,JIANG Fu-qing,LONG Cun.. Chinese Journal of Clinical Thoracic and Cardiovascular Surgery, 2013, 20(4): 435-440. doi: 10.7507/1007-4848.20130133 Copy