title: [Meta-analysis of safety and efficacy of self-expending metallic stents as bridge to surgery versus emergency surgery for left-sided malignant colorectal obstruction].
abstract: OBJECTIVE
  To evaluate the safety and efficacy of self-expending metallic stents (SEMS) as bridge to surgery versus emergency surgery for left-sided malignant colorectal obstruction.
  
  
  METHODS
  A comprehensive literature search of CENTRAL, PubMed, EMBASE, Medline, Ovid LWW, CMB, CNKI and Wanfang Databases were performed for all randomized controlled trials or retrospective studies comparing self-expending metallic stents as bridge to surgery(SABS group) with emergency surgery (ES group). A meta-analysis was carried out by RevMan5.1 software on the outcomes concerning safety and efficacy of the two groups.
  
  
  RESULTS
  Fourteen studies matched the criteria including 1083 patients. Five were randomized controlled trials and nine were retrospective analysis. Compared with the ES group, the SABS group had a lower short-term mortality(RR=0.52, 95% CI:0.30-0.93, P<0.05), lower overall complications(RR=0.46, 95% CI:0.31-0.70, P<0.05), higher resection rate(RR=1.90, 95%CI:1.33-2.70, P<0.01), shorter operative time(MD=-59.77, 95%CI:-87.51--32.04, P<0.01), and shorter interval to first flatus(MD=-10.78, 95%CI:-16.67--4.90, P<0.01). There were no statistically significant differences between the two groups in permanent stomy and hospital stay.
  
  
  CONCLUSIONS
  The safety and efficacy of self-expending metallic stents as bridge to surgery for left-sided malignant colorectal obstruction is superior to emergency surgery.
authors.affiliation: Department of Colorectal Surgery, Sun Yat-sen University, Guangzhou, China.
authors.forename: Ri-sheng
authors.initials: RS
authors.lastname: Zhao
authors.forename: Hui
authors.initials: H
authors.lastname: Wang
authors.forename: Lei
authors.initials: L
authors.lastname: Wang
authors.forename: Mei-jin
authors.initials: MJ
authors.lastname: Huang
authors.forename: Dian-ke
authors.initials: DK
authors.lastname: Chen
authors.forename: Jian-ping
authors.initials: JP
authors.lastname: Wang
mesh_terms: D003082:Colectomy; D015179:Colorectal Neoplasms / Q000150:complications* / Q000601:surgery; D004630:Emergencies; D006801:Humans; D007415:Intestinal Obstruction / Q000209:etiology / Q000601:surgery*; D015607:Stents; D016896:Treatment Outcome