【摘要】目的 应用二维斑点追踪技术(2D-STI)评价单纯左前降支心肌桥患者左室收缩功能。方法 经冠状动脉造影确诊单纯左前降支心肌桥患者31例，对照组30例。应用2D-STI分别获取并比较两组左室心内膜下、中层、心外膜下心肌整体纵向应变(GLSendo、GLSmid、GLSepi)。结果 两组GLSendo、GLSmid、GLSepi依次递减(P<0.05)；与对照组比较心肌桥组GLSendo减低(P<0.05)，GLSmid、GLSepi减低无显著差异(P>0.05)。结论 心肌纵向分层应变可定量评价单纯左前降支心肌桥患者左心功能。

    【关键词】心肌桥；二维斑点追踪技术；应变

    【中图分类号】R540.45；R541.4 【文献标识码】A 【文章编号】ISSN.2095-6681.2017.35..02

    【Abstract】Objective To assessment left ventricular systolic function in patients with myocardial Bridge(MB) of the left anterior descending coronary artery (LAD) by two-dimensional speckle tracking Imaging(2D-STI).Methods 31 patients with myocardial bridge of LAD and 30 patients of the control group were entrolled in this study. Global longitudinal strain of the endo-myocardium ......