The purpose of this study is to compare the use of ticagrelor alone versus P2Y12 receptor inhibitor and aspirin together after PCI among ST-elevation myocardial infarction patients who complete 3-month course of dual antiplatelet therapy. The object of this study is to determine the effectiveness and safety of ticagrelor alone, compared to P2Y12 receptor inhibitor plus aspirin in reducing clinically relevant bleeding and in reducing ischemic adverse events among patients diagnosed with ST-elevation myocardial infarction undergoing PCI with second-generation drug-eluting stent.
To compare the clinical outcomes of dual antiplatelet therapy with aspirin and P2Y12 receptor inhibitor vs. ticagrelor monotherapy at 3 months after PCI in patients with ST-elevation myocardial infarction.