冠状动脉的不稳定粥样斑块纤维帽破裂 ,局部血栓形成引起冠状动脉阻塞 ,是出现急性冠状动脉综合征 (ACS)即不稳定型心绞痛、急性心肌梗死心源性猝死的主要发病机制。　　近年来的研究表明这些不稳定的斑块都有一些共同的特点 :斑块的进展常常是突然的 ,且具有不可预测性〔1〕; Unstable coronary atherosclerotic plaque fiber cap rupture, local thrombosis caused by coronary artery occlusion, is the emergence of acute coronary syndrome (ACS) that unstable angina pectoris, acute myocardial infarction, the main pathogenesis of sudden cardiac death. In recent years, studies have shown that these unstable plaques have some common features: the progress of plaque is often sudden and unpredictable [1];