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冠状动脉痉挛,是因一枝或多枝冠状动脉自发的持续性的收缩而导致受这些动脉供应的心肌发生缺血及功能障碍。冠状动脉痉挛也造成浦氏心绞痛(Prinzmetal’s angina)即变异性心绞痛(休息时发生心绞痛)。并且已经知道在没有冠状动脉阻塞的病人,也能导致心肌梗塞。
Coronary artery spasm is due to the spontaneous and persistent contraction of one or more branches of the coronary arteries resulting in ischemia and dysfunction of the myocardium supplied by these arteries. Coronary artery spasms also cause Prinzmetal’s angina (variant angina) (angina at rest). It has also been known that myocardial infarction can also occur in patients without occlusion of the coronary artery.