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暂时性心肌缺血的出现,不论是自发的或由于运动或缺氧负荷所引起的心绞痛,在心电图上可出现ST段偏移,常见的阳性反应是ST段压低,偶而亦可在胸前导联或对向后下壁的导联上见到ST段抬高,酷似急性心肌梗塞。这在变异性心绞痛中也曾见到。其原因据认为是由于主要局限于一根冠状动脉主支的阻塞。某些患者运动可引起左室激动波的差异,包括完全性左束支传导阻滞,这是由于左束支分支近端或远端的激动途径有障碍所致。这些变化主要表现为额面电轴发
Temporary myocardial ischemia, either spontaneously or due to exercise or hypoxia caused by angina pectoris, ST segment shift can occur on the ECG, the common positive reaction is the ST segment depression, and occasionally in the chest lead Joint or against the lower wall of the lead to see ST segment elevation, resembles acute myocardial infarction. This has also been seen in variant angina. The reason is believed to be due to the obstruction that is mainly confined to the main coronary artery. Some patients with exercise can cause differences in left ventricular activation wave, including complete left bundle branch block, which is due to the proximal or distal branches of the left bundle branch of the inflammatory pathway due to obstacles. These changes mainly manifested as frontal hair axis hair