心肌缺血以心肌血的供需失衡为其基本病理变化,病因、诊断及治疗等方面仍存不少问题。近年来,有关混合性心肌缺血的新概念,无症状性心肌缺血的重要性和硝酸盐的耐药性令人颇感兴趣,现将这方面的发展和概念总结如下: 心肌缺血的发病机制通常认为,稳定性心绞痛与冠脉的固定性损害有关,不稳定性心绞痛还有多种因素的参与:如血小板聚集,血栓形成和血管痉挛,而变异性心绞痛则多因血管痉挛所致。然而,心肌缺血的发生与症 Myocardial ischemia to the imbalance of supply and demand of myocardial blood for the basic pathological changes, etiology, diagnosis and treatment, there are still many problems. In recent years, the new concept of mixed myocardial ischemia, the importance of asymptomatic myocardial ischemia and nitrate resistance is quite interesting, now the development and concepts in this regard are summarized as follows: myocardial ischemia Pathogenesis is generally believed that stable angina pectoris and coronary fixed damage related to unstable angina pectoris there are many factors involved: such as platelet aggregation, thrombosis and vasospasm, and varicose angina pectoris are mostly due to vasospasm . However, the occurrence of myocardial ischemia and disease