不稳定心绞痛(UA)多在动脉粥样斑块基础上发生冠脉痉挛或血栓形成所致,经硝酸甘油和肝素治疗可明显降低心肌梗塞的发生。但是仍有部分病人其动脉粥样斑块未消除难以用药物控制症状,存在着心肌梗塞和猝死的危险。为此我们对18例UA病人进行了经皮冠状动脉成型术(PTCA)。 临床资料 18例均为住院病人,男16例,女2例,平均年龄53.9±4.3(30～66)岁,其中恶化劳力型心绞痛11例,梗塞后心绞痛7例,均经系统 Unstable angina (UA) mostly in the atherosclerotic plaque caused by coronary spasm or thrombosis, nitroglycerin and heparin therapy can significantly reduce the incidence of myocardial infarction. However, there are still some patients whose atherosclerotic plaques are not eliminated, and it is difficult to control the symptoms with drugs. There is a risk of myocardial infarction and sudden death. To this end, we performed 18 cases of UA patients underwent percutaneous transluminal coronary angioplasty (PTCA). Clinical data of 18 patients were in-patients, 16 males and 2 females, mean age 53.9 ± 4.3 (30 ~ 66) years of age, including deterioration of angina pectoris in 11 cases, 7 cases of post-infarction angina, both by the system