102名疑有血管痉挛性心绞痛的患者进行冠(状动)脉造影并做麦角新碱激发试验,试验前停用抗心绞痛药物至少24h,经导管于主动脉窦内注入0.05～0.2mg马来酸麦角新碱,当出现心电图异常或心绞痛时立即施行冠脉造影,再用硝酸酯类药物解除心绞痛后再次造影。如果激发时冠脉内径比用硝酸酯药物后缩小≥75％判为阳性。102例中:52(男46,女6)例激发试验阳性,年龄29～70岁,50(男24,女26)例激发试验为阴性,年龄25～72岁。凡有下列情况之一者,为U波倒置:①新出现的U波倒置,深度≥0.5mm;②新出现的U波双相,早期负向波≥0.5mm;③原有负向U波,增深≥0.5mm。 102 patients with suspected angina spastic angina underwent coronary angiography and ergometrine challenge. Anti-angina drugs were discontinued for at least 24 h prior to the experiment and 0.05 to 0.2 mg of Mara were injected via the catheter into the aortic sinus Acid ergometrine, when ECG abnormalities or angina pectoris immediately when coronary angiography, and then relieve angina with nitrates again angiography. If excited when the coronary diameter than with nitrate drugs narrowed ≥ 75% sentenced as positive. Among the 102 cases, 52 (male 46, female 6) patients were positive in provocation test, and the challenge test was negative at the age of 29 to 70 years and 50 (24 men and 26 women), aged 25 to 72 years. Where one of the following circumstances, U-wave inversion: ① emerging U-wave inversion, depth ≥ 0.5mm; ② emerging U wave dual phase, the early negative wave ≥ 0.5mm; ③ the original negative U wave , Increasing depth ≥ 0.5mm.