255例冠心病患者解剖M型超声心动图与冠状动脉狭窄研究

Study of anatomic M - mode echocardiography and coronary artery stenosis in 255 cases of coronary artery disease

目的本文利用解剖M型（AMM）超声心动图技术，检测节段性室壁运动异常（RWMA）的患者与其冠状动脉造影（CAG）检查，评价AMM对冠状动脉狭窄程度的诊断价值。方法对255例初步诊断怀疑为冠心病的患者在冠状动脉造影检查前进行二维及AMM超声心动图检查，根据冠状动脉造影结果，分别定为无狭窄和轻、中、重度狭窄及完全闭塞。统计分析RWMA与相关冠状动脉分支狭窄程度的相关性。结果室壁运动异常的检出率随着冠状动脉狭窄程度的加重而提高，当狭窄〉90％或闭塞时，诊断的准确性明显提高。结论AMM检测RWMA是一种简便、无创的判断冠状动脉重度狭窄的方法。

Objective To examine of patients of ventricle wall motion abnormality （RWMA） in regional segments by anatomic M -mode（AMM） echocardiography, through comparision with their coronary angiography（CAG） results, the diagnostic value of AMM echocardiography in the coronary artery stenosis degree detection was evaluated. Methods A total of 255 patients suspected coronary artery disease（CAD） in preliminary diagnosis underwent AMM before CAG. According to the results of CAG, the stenosis were divided into 5 degrees ： no stenosis, mild stenosis, moderate stenosis, severe stenosis and completely occluded. Then the correlation between RWMA and the stenostic degree of related coronary artery- was statistically analyzed. Results The detection rate of RWMA was improved with its stenostic degree aggravated. Whereas the stenosis was ≥90% to complete occlusion, the diagnostic accuracy was highly improved. Conclusion AMM is a convenient, noninvasive method in detecting severe coronary artery stenosis.