title: External cephalic version-related risks: a meta-analysis.
abstract: OBJECTIVE
  To systematically review the literature on external cephalic version-related complications and to assess if the outcome of a version attempt is related to complications.
  
  
  METHODS
  In March 2007 we searched MEDLINE, EMBASE, and the Cochrane Central Register of Controlled Trials.
  
  
  METHODS
  Studies reporting on complications from an external cephalic version attempt for singleton breech pregnancies after 36 weeks of pregnancy were selected. We calculated odds ratios (ORs) from studies that reported both on complications as well as on the position of the fetus immediately after the procedure.
  
  
  RESULTS
  We found 84 studies, reporting on 12,955 version attempts that reported on external cephalic version-related complications. The pooled complication rate was 6.1% (95% CI 4.7-7.8), 0.24% for serious complications (95% confidence interval [CI] 0.17-0.34) and 0.35% for emergency cesarean deliveries (95% CI 0.26-0.47). Complications were not related to external cephalic version outcome (OR 1.2 (95% CI 0.93-1.7).
  
  
  CONCLUSIONS
  External cephalic version is a safe procedure. Complications are not related to the fetal position after external cephalic version.
authors.affiliation: Department of Obstetrics and Gynecology, Academic Medical Centre, University of Amsterdam, Amsterdam, the Netherlands.
authors.forename: Kim
authors.initials: K
authors.lastname: Grootscholten
authors.forename: Marjolein
authors.initials: M
authors.lastname: Kok
authors.forename: S Guid
authors.initials: SG
authors.lastname: Oei
authors.forename: Ben W J
authors.initials: BW
authors.lastname: Mol
authors.forename: Joris A
authors.initials: JA
authors.lastname: van der Post
mesh_terms: D001946:Breech Presentation / Q000628:therapy*; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D016017:Odds Ratio; D011247:Pregnancy; D012307:Risk Factors; D016896:Treatment Outcome; D014710:Version, Fetal / Q000009:adverse effects*