Vaginal birth after caesarean for women with three or more prior caesareans: assessing safety and success
Article first published online: 3 FEB 2010
© 2010 The Authors Journal compilation © RCOG 2010 BJOG An International Journal of Obstetrics and Gynaecology
BJOG: An International Journal of Obstetrics & Gynaecology
Volume 117, Issue 4, pages 422–428, March 2010
How to Cite
Cahill, A., Tuuli, M., Odibo, A., Stamilio, D. and Macones, G. (2010), Vaginal birth after caesarean for women with three or more prior caesareans: assessing safety and success. BJOG: An International Journal of Obstetrics & Gynaecology, 117: 422–428. doi: 10.1111/j.1471-0528.2010.02498.x
- Issue published online: 8 FEB 2010
- Article first published online: 3 FEB 2010
- Accepted 25 November 2009. Published Online 3 February 2010.
- Maternal morbidity;
- multiple caesareans;
- vaginal birth after caesarean (VBAC)
Please cite this paper as: Cahill A, Tuuli M, Odibo A, Stamilio D, Macones G. Vaginal birth after caesarean for women with three or more prior caesareans: assessing safety and success. BJOG 2010;117:422–427.
Objective To estimate the rate of success and risk of maternal morbidities in women with three or more prior caesareans who attempt vaginal birth after caesarean (VBAC).
Design Retrospective cohort design.
Setting Multicentre, from 1996 to 2000, including 17 tertiary and community delivery centres in north-eastern USA.
Population A total of 25 005 women who had had at least one prior caesarean delivery.
Methods Women who attempted VBAC with three or more prior caesareans were compared with those who attempted after one and two prior caesareans. Univariable and stratified analyses were used to select factors for multivariable analyses for maternal morbidity. Maternal characteristics were compared using a Student’s t test, Mann–Whitney U test, chi-square test or Fisher’s exact test, as appropriate.
Main outcome measures The primary outcome was composite maternal morbidity, defined as at least one of the following: uterine rupture, bladder or bowel injury, or uterine artery laceration. Secondary outcomes were VBAC success, blood transfusion and fever.
Results Of 25 005 women, 860 had three or more prior caesarean deliveries: 89 attempted VBAC and 771 elected for repeat caesarean. Of the 89 who attempted VBAC, there were no cases of composite maternal morbidity. They were also as likely to have a successful VBAC as women with one prior caesarean (79.8% versus 75.5%, adjusted OR 1.4, 95% CI 0.81–2.41, P = 0.22).
Conclusion Women with three or more prior caesareans who attempt VBAC have similar rates of success and risk for maternal morbidity as those with one prior caesarean, and as those delivered by elective repeat caesarean.