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关于U波倒置与左冠状动脉前降支的关系,Cerson对275例患者进行了研究,冠状动脉造影前,先作活动平板试验,除左心室肥大和安静时心电图有U波倒置者外,其余248例运动后U波倒置36例(15%)。冠状动脉造影35例存在显著的冠状动脉狭窄(狭窄>75%),其中33例狭窄部位在左冠状动脉主干部和前降支的近端。对于左冠状动脉主干和前降支近端显著狭窄的诊断,其敏感性30%,特异性98%,预测率92%。另外,作者对冠状动脉造影的849例安静时心电图进行探讨,胸前导联没有Q波的760例中,27例I、aVL、V_(4～6)出现U波倒置,27例中,左冠状动脉主干和前降支近端显著狭窄者24例(89%),27例狭
About U wave inversion and the relationship between left anterior descending coronary artery, Cerson 275 patients were studied before coronary angiography, the first active plate test, in addition to left ventricular hypertrophy and transepithelial ECG U wave inversion, the rest 248 cases of U wave inversion after exercise in 36 cases (15%). Coronary angiography 35 cases of significant coronary artery stenosis (stenosis> 75%), of which 33 cases of stenosis in the left coronary artery and proximal descending artery. For the diagnosis of significant stenosis of the left main coronary artery and proximal anterior descending artery, the sensitivity is 30%, the specificity is 98%, and the predictive rate is 92%. In addition, the author of coronary angiography in 849 cases of resting electrocardiogram to explore the chest lead without Q wave of 760 cases, 27 cases of I, aVL, V_ (4 ~ 6) appeared U wave inversion, 27 cases of left Twenty-four patients (89%) had coronary stenosis with proximal stenosis of proximal coronary artery and 27 patients were narrow