The AHA categories include ST - segment elevation myocardial infarction, non - STEMI myocardial infarction, and unstable angina pectoris.

AHA分类包括ST段抬高心肌梗死 、 非 ST抬高心肌梗死及不稳定性心绞痛.

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Conclusion Successful PCI could reduce QTd significantly in patients with ST - segment elevation myocardial infarction.

结论　直接PCI术治疗急性ST段抬高心肌梗死,可使患者QTd明显缩短.

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