Abstract
Background: This network meta-analysis was committed to evaluating the efficacy and safety of different dual antiplatelet therapies (DAPTs) after percutaneous coronary intervention (PCI) with drug-eluting stents (DESs).Methods: Randomized controlled trials (RCTs) comparing two of the following DAPT strategies: long-term (>12 months) DAPT (L-DAPT), 12-months DAPT (DAPT 12Mo), short-term (≤6 months) DAPT followed by aspirin monotherapy (S-DAPT+ASA), short-term DAPT followed by a P2Y12 receptor inhibitor monotherapy (S-DAPT+P2Y12) were searched. Primary outcomes were all-cause mortality, cardiac death, myocardial infarction (MI), stroke, major bleeding, any bleeding, definite or probable stent thrombosis (ST). This Bayesian network meta-analysis was performed with the random-effects model.Results: Twenty-four RCTs (n=81,376) were included. L-DAPT increased the risk of major bleeding (OR 2.37, 95%CI 1.32-5.03 compared with S-DAPT+P2Y12) and any bleeding (OR 2.95, 95%CI 1.91-4.34 compared with S-DAPT+P2Y12). When compared with L-DAPT, DAPT 12Mo (OR 1.54, 95%CI 1.13-2.02) and DAPT+ASA (OR 1.67, 95%CI 1.22-2.19) were associated with higher rates of MI, but S-DAPT+P2Y12 obtained no statistical difference. The sensitivity analysis revealed that the risks of major bleeding and any bleeding further increased for ≥18 months of DAPT. In the subgroup analysis, short-term DAPT (S-DAPT) presented similar efficacy and safety to DAPT 12Mo for patients with the acute coronary syndrome (ACS), and lower risks of major bleeding and all-cause mortality were observed in S-DAPT+P2Y12 among patients with newer-generation DES.Conclusions: S-DAPT+P2Y12 presented superiority in patients with all clinical presentations, for a lower risk of bleeding and not associated with increased ischemic harm. Besides, prospective research between aspirin monotherapy and P2Y12 monotherapy was required.