应用组织多普勒成像技术对前壁心肌梗死左心室舒张功能的诊断研究

Dopper tissue imaging for diagnosing anterior myocardial infarction

目的应用组织多普勒成像技术(DTI)诊断前壁心肌梗死左心室舒张功能。方法陈旧性前壁心肌梗死组患者45例,对照组健康成年人42例。均行二维超声心动图及DTI检查。结果心肌梗死组与对照组DTI测值比较:心肌梗死组梗死节段收缩期波峰值速度(Vs),舒张早期波峰值速度(Ve)明显低于对照组。二尖瓣环DTI心肌梗死组舒张期早期速度(Ea)明显低于对照组,而舒张晚期速度无显著差异。结论DTI为定量分析左心室舒张功能提供了有效检测手段。

Objective To diagnose the left ventricular diastolic function with anterior wall myocardial infarction（AMI） using Dopper tissue image（DTI）. Metthods 45 patients with anterior wall myocardial infarction and the group of 42 healthy adults were detected by DTI and echocardiography. Results In patients with AMI, systolic and early diastolic peak velocities of infarction segments were significantly lower than those in normal subjects, so as the early diastolic peak velocity of mitral annulus. But there was no evidently difference of the terminal diastolic peak velocity of mitral annulus. Conclusion DTI can assess left ventricular diastolic function, it is a reliable quantitive method to assess cardiac function.