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劳力性或自发性心绞痛发作时,一般都有相应的典型心电图改变。直立高尖T波和ST段压低,这与心内膜下缺血有关;ST段抬高,常见于冠状动脉痉挛性心绞痛,与严重透壁性缺血有关,T波由倒置变为直立,以致出现假性改善心电图,这一图型应认为是在以前有整个电室壁受累的心肌损伤或心肌梗塞的基础上,又发生严重缺血;暂时性异常Q波。偶见于急性心肌缺血而无心肌梗塞时。
When exertional or spontaneous angina pectoris occurs, there is generally a corresponding change in the typical ECG. Upright tip T-wave and ST-segment depression, which is associated with subendocardial ischemia; ST-segment elevation, common in coronary artery spasm angina pectoris, and severe transmural ischemia, T wave by the inverted into an upright, Resulting in pseudo-improved electrocardiogram, the pattern should be considered in the past had the entire wall involvement of myocardial damage or myocardial infarction, based on the occurrence of severe ischemia; temporary abnormal Q waves. Occasionally in acute myocardial ischemia without myocardial infarction.