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二维应变超声心动图对心肌梗死后左室局部室壁运动异常的定量评价

黄淑华   

  1. 天津市第四中心医院超声科
  • 收稿日期:2010-12-16 修回日期:2011-04-01 出版日期:2011-07-15 发布日期:2011-07-15
  • 通讯作者: 黄淑华

Two-dimensional Strain Echocardiography after Myocardial Infarction Left Ventricular Regional Wall ?Motion Abnormalities in the Quantitative Evaluation

  • Received:2010-12-16 Revised:2011-04-01 Published:2011-07-15 Online:2011-07-15

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摘要： 目的：应用二维应变超声心动图（two-demensional strain echocardiography,2D-SE）定量评价心肌梗死后左室局部室壁运动异常，探讨其临床应用价值。方法：采集40例心肌梗死患者（根据病史、体征、心电图及心肌酶谱诊断，部分冠状动脉造影确诊）和40例对照组患者的心尖左室长轴、心尖四腔和心尖左室两腔的3个连续心动周期的二维灰阶动态图像，二维应变定量分析软件进行左室节段的定量分析，自动显示感兴趣区中各节段室壁沿心肌纵行纤维方向上的峰值收缩应变和应变曲线图，并自动得出18节段的应变牛眼图。结果：对照组左室壁各节段收缩期纵向应变值为负，各部分应变绝对值从基底段、中间段到心尖段逐步增加，但差异均无统计学意义（P > 0.05）。心肌梗死组室壁无对应组相应变化规律，但各节段应变绝对值较正常对照组均明显减低（P < 0.05）。结论：二维应变超声心动图可以对心肌梗死后左室局部室壁运动异常进行客观的定量评价。

关键词: 二维应变, 超声心动图, 心肌梗死

Abstract: Objective: To evaluate the clinical value of Two-dimensional strain echocardiography in the quantitative evaluation of myocardial infarction left ventricular regional wall motion abnormalities. Methods : 40 patiengts with myocardial infarction(According to history, signs, ECG and myocardial enzymes diagnosis, part of the coronary angiography) and 40 healthy subjects. Access to apical left ventricular long axis, apical four-chamber and apical two-chamber left ventricular cardiac cycles of 3 consecutive dynamic two-dimensional gray scale image. Quantitative analysis of two-dimensional strain software, quantitative analysis of left ventricular segments, Automatically appear in each region of interest along the myocardial wall segment fiber direction of the longitudinal peak systolic strain and strain curves, And automatically derived bovine strain of paragraph 18 chart. Results: Control group, left ventricular systolic longitudinal strain of each segment is negative. Absolute value of the strain from the basal part of the middle section to the apical segments gradually increase, but the difference was not statistically significant (P> 0.05). Wall myocardial infarction, no corresponding changes in the corresponding set of rules.However, the absolute value of each segment strain than the normal control group were significantly lower (P <0.05). Conclusion: Two-dimensional strain echocardiography for myocardial infarction left ventricular regional wall motion abnormalities after an objective quantitative evaluation.

Key words: two-dimensional strain, echocardiography, myocardial infarction