解剖M型超声心动图在冠心病室壁运动障碍中的应用

Application of anatomic M-mode echocardiogram in left ventricular wall motion in patients with coronary artery diseases

目的探讨解剖M型超声心动图技术在分析冠心病患者室壁运动障碍中的应用价值。方法53例冠心病患者分为心绞痛组(Ⅰ组)和心肌梗死组(Ⅱ组)进行解剖M型超声心动图检查,采集左室短轴二尖瓣腱索水平的二维图像,测量左心室前壁、后壁和下壁各节段的室壁运动幅度和收缩期增厚率,并和30例正常对照组(Ⅲ组)比较。结果Ⅲ组左室壁各节段的运动幅度和收缩增厚率均在正常范围。与Ⅰ、Ⅲ组比较,Ⅱ组运动幅度和收缩增厚率均明显减低(P<0.05),Ⅰ组与Ⅲ组间运动幅度和收缩增厚率比较差异无统计学意义(P>0.05)。结论解剖M型技术为左室局部收缩功能的评价以及节段性室壁运动障碍的判断提供了简便、客观精确的科学方法。

Objective To explore the clinical value of anatomic M-mode echocardiogram for left ventricular（LV）wall motion in patients with coronary artery diseases（CAD）. Methods Anatomic M-mode echocardiogram were performed in 53 patients with angina pectoris（group Ⅰ ） ,myocardial infarction（group Ⅱ ）and 30 normal controls（group Ⅲ ）. Short-axis views were acquired. And the wall motion amplitudes（WMA）and the wall thickening fractions（WTF）of anterior wall, posterior wall and inferior wall were measured. Results The WMA and WTF of LV segments in group Ⅲ were in normal range. The WMA and WTF of LV segments in group Ⅱ were significantly lower than in group Ⅰ and group Ⅲ （P〈 0.05）. Conclusion The anatomic M-mode echocardiograrn could be easier and more accuracy for assessing LV systolic function and abnormal regional wall motion.