title: Double versus single stenting for coronary bifurcation lesions: a meta-analysis.
abstract: BACKGROUND
  Several trials have addressed whether bifurcation lesions require stenting of both the main vessel and side branch, but uncertainty remains on the benefits of such double versus single stenting of the main vessel only.
  
  
  RESULTS
  We have conducted a meta-analysis of randomized trials including patients with coronary bifurcation lesions who were randomly selected to undergo percutaneous coronary intervention by either double or single stenting. Six studies (n=1642 patients) were eligible. There was increased risk of myocardial infarction with double stenting (risk ratio, 1.78; P=0.001 by fixed effects; risk ratio, 1.49 with Bayesian meta-analysis). The summary point estimate suggested also an increased risk of stent thrombosis with double stenting, but the difference was not nominally significant given the sparse data (risk ratio, 1.85; P=0.19). No obvious difference was seen for death (risk ratio, 0.81; P=0.66) and target lesion revascularization (risk ratio, 1.09; P=0.67).
  
  
  CONCLUSIONS
  Stenting of both the main vessel and side branch in bifurcation lesions may increase myocardial infarction and stent thrombosis risk compared with stenting of the main vessel only.
authors.affiliation: Department of Cardiology, Athens Euroclinic, Athens, Greece.
authors.forename: Demosthenes G
authors.initials: DG
authors.lastname: Katritsis
authors.forename: George C M
authors.initials: GC
authors.lastname: Siontis
authors.forename: John P A
authors.initials: JP
authors.lastname: Ioannidis
mesh_terms: D000368:Aged; D015906:Angioplasty, Balloon, Coronary / Q000379:methods*; D001499:Bayes Theorem; D003327:Coronary Disease / Q000628:therapy*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000453:epidemiology; D012307:Risk Factors; D015607:Stents / Q000009:adverse effects*; D013927:Thrombosis / Q000453:epidemiology; D016896:Treatment Outcome