1临床资料患者男性,64岁,因发作性胸痛2年于2011-04入院。患者于入院前2年出现发作性胸痛,每次持续数分钟至十余分钟,活动时出现,每年发作1～2次。入院前3个月凌晨睡眠时症状再发,持续约十余分钟,遂至当地医院行冠状动脉造影示:前降支90%狭窄,回旋支100%闭塞,第一钝缘支90%狭窄,右冠状动脉斑块。因患者有重症肌无力合并胸腺瘤病史,拟行冠 1 clinical data of patients male, 64 years old, due to episodes of chest pain for 2 years in 2011-04 admitted to hospital. Patients with paroxysmal chest pain 2 years before admission, each lasting several minutes to more than ten minutes, activities occur, episodes of 1 or 2 times a year. Three months before admission, the symptoms of recurrent sleep in the early morning, continued for about ten minutes, then to the local hospital line coronary angiography showed: 90% of the anterior descending artery stenosis, 100% occlusion of the collateral circulation, the first obtuse 90% stenosis, Right coronary plaque. Due to patients with myasthenia gravis with thymoma history, intended to crown