急性心肌梗死(acute myocardial infarction,AMI)的治疗进入了再灌注时代,经皮冠状动脉介入(PCI)治疗因其能够快速地开通梗死相关动脉而被普遍认为是AMI患者血运重建的首选方法。然而不是所有患者都能从早期开通血管的治疗中获益[1-2],评价血管开通后心肌组织的实际灌注情况对于早期识别高危患者及时采取补救治疗至关重要,而再灌注治疗后心电图相关导联ST段的回落对判 The treatment of acute myocardial infarction (AMI) is undergoing reperfusion. Percutaneous coronary intervention (PCI) is generally considered as the first choice for revascularization in patients with AMI because of its ability to quickly open infarct-related arteries. However, not all patients benefit from early open vessels [1-2]. Evaluating the actual perfusion of the myocardium after the opening of the blood vessel is crucial for the early detection of high-risk patients for timely remedial treatment. However, post-reperfusion therapy ECG Relevant lead ST segment down on the sentence