心绞痛(AP)是冠心病常见的一种症状,它是由于心肌耗氧和供氧量暂时失去平衡所致。自70年代提出冠状动脉(CA)痉挛问题后,目前认为AP既可因心肌耗氧量暂时增加超出了已经狭窄的CA所能提供的氧而发生(劳力心绞痛),也可因CA痉挛而致心肌供氧不足而引起(自发心绞痛)。研究证明CA痉挛多数发生在CA已有狭窄的基础上,仅10％左右的病变十分轻微。 Angina pectoris (AP) is a common symptom of coronary heart disease due to a temporary loss of balance between myocardial oxygen consumption and oxygen supply. Since the 1970s raised the problem of coronary artery (CA) spasm, it is currently believed that AP may be caused by a temporary increase in myocardial oxygen consumption beyond that provided by the already narrowed CA (exertional angina) or by CA spasms Myocardial oxygen deficiency (spontaneous angina). Studies have shown that the majority of CA spasm occurred in the CA has been based on the narrow, only about 10% of the lesions are very mild.