Lesion Complexity and Outcomes of Extended Dual Antiplatelet Therapy After Percutaneous Coronary Intervention

Journal of the American College of Cardiology
Robert W YehDAPT Study Investigators

Abstract

Subjects undergoing coronary stenting with complex lesion anatomy may experience different risks and benefits with prolonged dual antiplatelet therapy. The authors assessed the effect of 30 months versus 12 months of dual antiplatelet therapy (DAPT) after percutaneous coronary intervention (PCI) based on the presence or absence of anatomically-complex target lesions. In the DAPT Study, combined myocardial infarction (MI) or stent thrombosis and moderate/severe bleeding were assessed in enrolled (n = 25,416) and randomized (n = 11,554) subjects. Complex lesions had any of the following characteristics: unprotected left main, >2 lesions/vessel, length ≥30 mm, bifurcation with side branch ≥2.5 mm, vein bypass graft, or thrombus-containing lesion. Events were evaluated according to increasing number of complexity characteristics and compared according to DAPT score. Enrolled subjects with more complex target lesions had higher rates of MI or stent thrombosis in the first 12 months after PCI (3.9% vs. 2.4%; p < 0.001). Among those who were event-free at 12 months, rates of MI or stent thrombosis between 12 and 30 months were similar between those with versus without complex anatomy (3.5% vs. 2.9%; p = 0.07). Reduction of MI or stent...Continue Reading

Associated Clinical Trials

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