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为定量分析心肌梗塞区左室节段性室壁运动的变化,选择经过冠脉造影证实的正常对照组(N)12例,陈旧性心肌梗塞组(OMI)21例,进行2-DE检查。利用计算机定量分析心尖四腔心(Ap4C)和心失二腔心(Ap2C)的左室24个节段的面积缩小率(PAR)。结果表明OMI组左室EF明显低于N组。前壁OMI组室间隔、前壁和心尖的平均PAR较N组明显为低,且还较非梗塞区侧壁和下壁低。OMI组中,18例检出节段性室壁运动异常,敏感性和特异性分别为86％,92％。OMI组梗塞范围占左室的25±12％。提示:2-DE对心肌梗塞的部位和范围有极重要的诊断价值。
To quantitatively analyze the changes of left ventricular segmental wall motion in myocardial infarction area, 12 cases of normal control group (N) confirmed by coronary angiography and 21 cases of old myocardial infarction group (OMI) were selected for 2-DE examination. The area reduction ratio (PAR) of 24 segments of the left ventricle of the apical four-chamber heart (Ap4C) and the apomorphic two-chamber heart (Ap2C) was quantitatively analyzed by computer. The results showed that left ventricular EF in OMI group was significantly lower than that in N group. The mean PAR of the anteroseptal, anterior and apical walls in the anterior OMI group was significantly lower than those in the N group and lower than those in the non-infarcted area. OMI group, 18 cases were detected segmental wall motion abnormalities, sensitivity and specificity were 86%, 92%. OMI group infarction range of left ventricular accounted for 25 ± 12%. Tip: 2-DE has a very important diagnostic value for the location and extent of myocardial infarction.