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急性心肌梗塞后,一部分病例因剩余心肌缺血,而于近期内表现为不稳定型心绞痛,称为“心肌梗塞后心绞痛”,是心肌梗塞的一个特殊类型。 一、发病原理 剩余心肌缺血可限于梗塞区边缘带,即梗塞区缺血;也可限于远距离血管床,即远距离缺血。 梗塞区缺血原理是:梗塞相关冠脉张力增高及/或血小板产物增多引起冠脉痉挛、血小板聚集,以及梗塞区新近血栓形成引起冠脉闭塞。
After acute myocardial infarction, some cases due to residual myocardial ischemia, but in the near future showed unstable angina, known as “post-myocardial infarction angina” is a special type of myocardial infarction. First, the pathogenesis of residual myocardial ischemia can be limited to the marginal zone of infarction, that is, ischemic infarction; may also be limited to long-distance vascular bed, that is, long-distance ischemia. The principle of ischemia in the infarct zone is: increased coronary artery infarction-related tension and / or increased platelet production causes coronary spasm, platelet aggregation, and recent thrombosis in the infarct region that causes coronary occlusion.