It is believed that rupture of unstable coronary atherosclerotic plaque is mainly responsible for it, not the narrows of the coronary artery.

• 现多数观点认为,它的发生与冠脉粥样硬化斑块的稳定性有关,而与冠脉的狭窄程度无关,斑块不稳定性是导致斑块破裂的主要因素,近年来大量的研究投入急性冠脉综合征的发病机制及其预防上。