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本研究目的是估价心电图诊断休息时短暂可逆心肌缺血病人冠状动脉病变(cAD)的范围。 方法:所选病人均有休息时短暂胸痛期记录的12导联ECG,冠状动脉造影有下列1支以上血管严重狭窄:左主干,右冠状动脉近端、左前降支、或迥旋支近端。严重狭窄是指其直径在任何投照部位较邻近正常冠状动脉直径减少≥70％。以前有冠状血管再造、急性心肌梗塞或左束支阻滞的病人除外。在J点后80ms测定ST段的偏移、PQ段做为等电位线来分析休息时胸痛期显著异常的ECG,同时也要与无胸痛时的ECG相比较。计算ST段改变的导联数及ST段偏移的总和。应
The purpose of this study was to assess the extent of coronary artery lesions (cAD) in patients with transient reversible myocardial ischemia at electrocardiographic diagnosis. Methods: The selected patients had a 12-lead ECG recorded during a brief chest pain at rest. Coronary angiography had one or more of the following severe vascular stenoses: left main artery, proximal right coronary artery, left anterior descending artery, . Severe stenosis refers to the diameter of any projection less than normal coronary artery diameter ≥ 70%. In the past, patients with coronary revascularization, acute myocardial infarction or left bundle branch block excluded. The shift of the ST segment was measured at 80 ms after the J point, and the PQ segment was used as the equipotential line to analyze the significant abnormal chest ECG during rest and at the same time as the ECG without chest pain. The sum of the number of ST segment changes and the ST segment offset is calculated. should