title: The management of VBAC at term: a survey of Canadian obstetricians.
abstract: OBJECTIVE
  To determine the current practice patterns of Canadian obstetricians towards pregnant women at term, with intact membranes, who have had a previous Caesarean delivery.
  
  
  METHODS
  A questionnaire was developed in French and English, pretested, and mailed to all obstetricians registered with the Canadian Medical Directory. Two reminders were sent out at 3-week intervals. Respondents  identities were kept anonymous.
  
  
  RESULTS
  Of 1497 questionnaires sent out, 750 (50%) were returned. Of these 750 respondents, 102 were no longer working in obstetrics and 47 did not manage women with prior uterine incisions in labour, thus leaving 601 respondents (80% of all respondents) who did manage pregnant women in labour with previous Caesarean scars eligible for the analysis. Whereas 91% of these 601 respondents always counsel prospective vaginal birth after Caesarean (VBAC) candidates regarding the risk of uterine rupture, 9% never, or only occasionally, do so. Of these 601 respondents, 16% would use ultrasound assessment of lower uterine segment thickness to consider patients for VBAC, and 25% percent would use prostaglandins to induce labour in women who have had a previous Caesarean.
  
  
  CONCLUSIONS
  There is considerable disparity in the approach of Canadian obstetricians to the management of women with a previous Caesarean delivery scar who come to term without the spontaneous onset of labour, including appropriateness of inducing labour. A large, multicentre, prospective, randomized controlled trial of large numbers of women would help to determine the safety of VBAC and induction of labour in the setting of a uterine scar.
authors.affiliation: Department of Obstetrics and Gynaecology, Mount Sinai Hospital, Toronto, ON, Canada.
authors.forename: Yoav
authors.initials: Y
authors.lastname: Brill
authors.forename: John
authors.initials: J
authors.lastname: Kingdom
authors.forename: Jacqueline
authors.initials: J
authors.lastname: Thomas
authors.forename: William
authors.initials: W
authors.lastname: Fraser
authors.forename: J Kenneth
authors.initials: JK
authors.lastname: Milne
authors.forename: Martin
authors.initials: M
authors.lastname: Thomas
authors.forename: Rory
authors.initials: R
authors.lastname: Windrim
mesh_terms: D000328:Adult; D002170:Canada; D005260:Female; D006801:Humans; D007751:Labor, Induced; D010818:Practice Patterns, Physicians'; D011247:Pregnancy; D011256:Pregnancy Outcome; D012307:Risk Factors; D011795:Surveys and Questionnaires; D014597:Uterine Rupture / Q000453:epidemiology / Q000517:prevention & control; D014599:Uterus / Q000473:pathology; D016064:Vaginal Birth after Cesarean