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业已证实冠状动脉痉挛是心绞痛与心肌梗塞的发病机理之一,而自主神经系统与冠状动脉痉挛的关系亦已受到重视。晚近的研究显示,血循环中血小板聚集增加,血栓素B_2(TxB_2)[血栓素A_2(TxA_2)的稳定衍生物]增加。TxA_2是一种强力的血小板聚集剂和血管收缩物质,能使冠状动脉收缩。前列环
It has been confirmed that coronary artery spasm is one of the pathogenesis of angina pectoris and myocardial infarction, and the relationship between autonomic nervous system and coronary artery spasm has also been taken seriously. Recent studies have shown an increase in platelet aggregation in the blood circulation with an increase of TxB 2 [a stable derivative of thromboxane A 2 (TxA 2)]. TxA_2 is a potent platelet aggregator and vasoconstrictor that constricts coronary arteries. Front ring