中国医科大学学报2017，Vol.46Issue(4)：353-356,4.DOI:10.12007/j.issn.0258-4646.2017.04.017
左心室纵向应变预测原发性二尖瓣反流术后左心室收缩功能减低
Longitudinal Strain of Primary Mitral Regurgitation Predicts Postoperative Worsening of Left Ventricular Systolic Function
摘要
Abstract
Objective To analyze subclinical changes of left ventricular deformation by using two-dimensional (2-D) speckle tracking imaging (STI) in primary mitral regurgitation (MR) and to identify sensitive parameters of left ventricular deformation that reflect reduction of left ventricu-lar function after mitral valve repair.Methods We evaluated patients with primary MR who underwent mitral valve repair between May 2013 and June 2015.According to the reduction in ejection fraction (EF),the MR patients were divided into MR1 (EF reduction of ≤10％) and MR2 groups (EF reduction of ＞10％).The parameters of left ventricular deformation were measured by using 2-D STI.Results Compared with the MR1 group,the MR2 group had increased global longitudinal strain (GLS;P ＜ 0.05).A positive correlation was found between postoperative EF reduction and left ventricular intemal dimension at end-diastole,left ventricular internal dimension at end-systole,end-diastohc volume,left ventricular mass index,regurgitant volume,and GLS (P ＜ 0.05).GLS showed a diagnostic value in predicting EF reductions of ＞ 10％.Conclusion STI is useful for evaluating the postoperative reduction of left ventricular function in primary MR patients and thus is helpful for optimizing surgical timing.关键词
斑点追踪成像/二尖瓣反流/左心室功能Key words
speckle tracking imaging/mitral regurgitation/left ventricular function分类
医药卫生引用本文复制引用
王晓冰,杨军,陈昕,马春燕..左心室纵向应变预测原发性二尖瓣反流术后左心室收缩功能减低[J].中国医科大学学报,2017,46(4):353-356,4.基金项目
沈阳市科学技术计划(F15-199-1-32) （F15-199-1-32）
