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急性心肌梗死早期变化

急性心肌梗死早期变化

图示心肌梗死:凝固性坏死。中性粒细胞广泛浸润,核溶解、胞浆减少,是典型的急性心肌梗死的1-4天的表现。心肌梗死常发生于冠状动脉粥样硬化闭塞。虽然侧支循环形成能够有效应对缺血,但不能阻止坏死的发生。

Shown is myocardium undergoing coagulative necrosis; this is a myocardial infarction. The extent of neutrophilic infiltrates, along with karyolysis and loss of cytoplasmic cross striations, is typical for an acute myocardial infarct of 1 to 4 days in duration from onset. Myocardial infarction almost always results from occlusive coronary artery atherosclerosis. Though collateral circulation can develop over time in response to ischemia, this may not be sufficient to prevent necrosis.


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