Tei指数评价冠脉旁路移植术前后左室整体心功能变化  

Changes of left ventricular function prior and post to coronary artery bypass surgery: an evaluation by Tei index

作　　者：王茵[1] 赵宝珍[1] 李卫萍[1] 孙秀英[1] 蔡珠虹[1] 

机构地区：[1]上海长海医院超声科,上海200433

出　　处：《中国医学影像技术》2005年第12期1902-1904,共3页Chinese Journal of Medical Imaging Technology

基　　金：上海市科技发展基金项目资助(024119028)

摘　　要：目的应用Tei指数评价冠脉旁路移植术(CABG)前后患者整体心室功能的变化.方法34例行CABG手术的冠心病患者根据术前LVEF测值分为A组(EF正常组)和B组(EF低下组),分别于术前、术后2～4周、3个月、6个月,应用Tei指数、左室射血分数(LVEF)和二尖瓣血流图检测左室整体心功能.结果术前,A、B两组Tei指数均较正常增高,且B组显著高于A组(P＜0.01).术后,两组Tei指数均逐渐下降,与术前比较以及术后各时间点间比较差异显著(P＜0.05或0.01),且术后不同时间点两组间比较差异显著(P＜0.01).采用LVEF和二尖瓣血流图评价时,术前A、B两组间均存在显著差异(P＜0.05);术后A组LVEF较术前增高不显著(P＞0.05),但E/A较术前明显增高(P＜0.01);B组LVEF较术前明显增高(P＜0.05),E/A早期减低,术后3个月至6个月逐渐升高.结论Tei指数综合考虑心室收缩和舒张功能,能较LVEF和E/A更准确地评价CABG前后患者整体心功能的变化.Objective To investigate the value of Tei index in evaluating global left ventricular （LV） function changes in patients receiving coronary artery bypass grafting （CABG）. Methods Thirty-four patients who underwent CABG surgery were enrolled. According to the LVEF （left ventricular ejection fraction, measured by Simpson＇s method）, the patients were grouped into A （normal EF） and B （decreased EF）. Tei index, left ventricular ejection fraction （LVEF） and mitral inflow were acquired by echocardiography before and 2-4 week, 3 months and 6 months after CABG. Results Before surgery, Tei index of the two groups were both increased （abnomal）, while the increase was more significant in group B than in group A （P〈0.01）. After surgery, Tei index of both groups decreased gradually. Between prior and post to CABG and at all time points after CABG. There were significant differences （P〈0.05 or P〈0.01） in both the groups. Moreover, between the two groups, there were significant differences at all time points post-surgery （P〈0.01）. When evaluated using LVEF and mitral spectral, these patients showed significant difference between two groups before surgery （P〈0.05）. After surgery, LVEF of group A increased non-significantly （P〈0. 05） and E/A ratio increased gradually and significantly （P〈0.01） when compared with pre-surgery. LVEF of group B increased significantly （P〈0.05） and E/A ratio decreased at first time point （2-4 weeks post-surgery） and then increased gradually （form 3 to 6 months post-surgery）. Conclusion Tei index evaluates systolic and diastolic heart function comprehensively and assessed the global LV function change more accurately than LVEF and E/A in our study.

关 键 词：冠状动脉旁路移植术 左室功能 TEI指数 左室射血分数 

分 类 号：R654[医药卫生—外科学] R540.45[医药卫生—临床医学]