Chinese Medical Sciences Journal ›› 2017, Vol. 32 ›› Issue (1): 1-12.doi: 10.24920/J1001-9242.2007.001

• Orginal Article •     Next Articles

Efficacy of Short-term Dual Antiplatelet Therapy after Implantation of Second-generation Drug-eluting Stents: A Meta-analysis and Systematic Review

Huang Peisen1#, Yu Yuan1#, Han Xikun1, Yang Yuejin1, *()   

  1. 1State Key Laboratory of Cardiovascular Disease
    2National Clinical Research Center of Cardiovascular Diseases, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
  • Published:2017-03-31 Online:2017-04-10
  • Contact: Yang Yuejin

Objective The benefit of short-term dual antiplatelet therapy (DAPT) following second-generation drug-eluting stents implantation has not been systematically evaluated. To bridge the knowledge gap, we did a meta-analysis to assess the efficacy of ≤6 months versus ≥12 months DAPT among patients with second-generation drug-eluting stents.Methods We searched online databases and identified randomized controlled trials that assess the clinical impact of short-term DAPT (≤6 months) published before March 3, 2016. The efficacy endpoints included the incidence of all-cause death, myocardial infarction, cerebrovascular accidents, and definite or probable stent thrombosis. Safety endpoint defined as major bleeding was also evaluated and discussed.Results We included 5 trials that randomized 9473 participants (49.8%, short-term DAPT duration vs. 50.2%, standard duration). A total of 9445 (99.7%) patients reported the efficacy endpoints, and the safety endpoint was available from 4 studies (n=8457). There was no significant difference in efficacy endpoints between short-term and standard DAPT duration (≥12 months) [risk ratio (RR) 0.96; 95% confidence intervals (CI), 0.80-1.15]. Short-term DAPT duration did not significantly increase the individual risk of all-cause death, myocardial infarction, cerebrovascular accidents, or definite or probable stent thrombosis. Although short-term DAPT obviously reduced risk of major bleeding compared with standard DAPT (RR 0.53; 95% CI, 0.29-0.96), significant publication bias was found when accessing the safety endpoint of the 4 studies (Egger’s test, P=0.009).Conclusions The efficacy of short-term DAPT was comparable with that of standard duration DAPT. DAPT less than 6 months may be appropriate for patients receiving second-generation drug-eluting stents implantation.

Key words: meta-analysis, drug-eluting stents, dual antiplatelet therapy, percutaneous coronary intervention, efficacy

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