一些研究表明,急性心肌梗塞(AMI)发作有明显的昼间差异,即梗塞多发生在早晨,而较少发生在夜间。这种发作时间的特征与近来观察到的血小板聚集性增加、血浆各种凝血因子活性增高以及肾上腺素能活性和体内纤溶系统活性降低相一致,但是,这些结果是在有Q波型心肌梗塞病人中观察到的。冠状动脉造影表明,动脉粥样硬化斑上血栓形成完全阻塞冠状动脉血流是有Q波型心肌梗塞病人的病理基础。然而,约30-40%AMI病人并不形 Some studies have shown that there is a clear diurnal difference in the onset of acute myocardial infarction (AMI), ie, infarction occurs mostly in the morning and less in the night. The timing of this episode is characterized by the recent increase in platelet aggregation, increased activity of various clotting factors in the plasma, and decreased adrenergic activity and in vivo fibrinolytic system activity, but these results are consistent with Q-wave myocardial infarction Observed in the patient Coronary angiography showed that atherosclerotic plaque thrombus formation completely blocked coronary flow is a pathological basis for patients with Q-wave myocardial infarction. However, about 30-40% of AMI patients are not