变异型心绞痛发作时的心电图以ST段升高为特征,然而变异型心绞痛多在夜间至清晨发作,且发作时间往往很短,因而通过心电图来捕捉自然发作是有一定困难的。作者们对39例变异型心绞痛患者通过静注ergo-novine(麦角新碱)诱发心绞痛并对发作前、发作中及恢复期全部过程所记录的导联心电图进行了分析。在描记发作中的心电图和进行冠状动脉造影后立即给硝酸甘油含服或动脉内注以缓解发作。结果:全部39例心电图上有3mm以上的ST段升高,发作中倒置U波见于胸前导联ST段升高组的全部18例(100%),下壁导联ST段升高组21例中的4例(19%)。胸部导联ST段升高组全部18例于发作时可见左前隆枝冠状动脉痉挛。其中发作时ST段升高 The ECG at the onset of variant angina pectoris is characterized by an increase in ST segment. However, variant angina pectoris usually occurs at night to early morning and the onset time is often short. Thus, it is somewhat difficult to capture a spontaneous attack by electrocardiogram. In 39 patients with variant angina pectoris, angiotensis was induced by intravenous ergo-novine (ergonovine) and the electrocardiogram recorded during the entire episode before, during, and after the episode was analyzed. In tracing the onset of electrocardiogram and coronary angiography immediately after nitroglycerin buccal or intra-arterial injection to alleviate the attack. Results: In all 39 cases, there was an ST-segment elevation above 3mm on the electrocardiogram. Inverted U wave in the attack was found in all 18 cases (100%) of the ST-segment elevation in the thoracic lead and in the ST segment elevation in the inferior leads 4 cases (19%). Thoracic lead ST-segment elevation group, all 18 cases of seizures can be seen when the left anterior branch of coronary artery spasm. ST-segment elevation during which episodes