title: The incidence of spontaneous version after failed external cephalic version.
abstract: OBJECTIVE
  The objective of the study was to assess the rate of spontaneous version after failed external cephalic version (ECV) at term.
  
  
  METHODS
  We prospectively collected data from all trials of ECV in our center between January 1997 and June 2005. Collected data included demographic and obstetric parameters.
  
  
  RESULTS
  Six hundred three ECV attempts were included in the study. Success rates were 72.3% and 46.1% for multiparas and nulliparas, respectively. Of the 226 failed attempts (8 were lost to follow-up), the rate of spontaneous version to vertex presentation before the onset of labor was 6.6%. Of all 15 spontaneous versions, 3 were in the nulliparous group (2.3%) and 12 in the multiparous group (12.5%).
  
  
  CONCLUSIONS
  The incidence of spontaneous version after failed ECV is small, at least in nulliparous women. We recommend that ECV attempts should be undertaken in a setting prepared for elective cesarean section in the event of ECV failure, if vaginal breech delivery is not considered an option, and preferably after 39 weeks to decrease neonatal morbidity from respiratory complications.
authors.affiliation: Department of Obstetrics and Gynecology, Hadassah Hebrew University Medical Center, Ein-Kerem, Jerusalem, Israel.
authors.forename: Assaf
authors.initials: A
authors.lastname: Ben-Meir
authors.forename: Tamar
authors.initials: T
authors.lastname: Elram
authors.forename: Avi
authors.initials: A
authors.lastname: Tsafrir
authors.forename: Uriel
authors.initials: U
authors.lastname: Elchalal
authors.forename: Yossef
authors.initials: Y
authors.lastname: Ezra
mesh_terms: D001946:Breech Presentation / Q000628:therapy*; D005260:Female; D006801:Humans; D015994:Incidence; D011247:Pregnancy; D012075:Remission, Spontaneous; D017211:Treatment Failure; D014710:Version, Fetal / Q000706:statistics & numerical data*