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Database - Alliance francophone pour l'accouchement respecté (AFAR)

Description of this bibliographical database (AFAR website)
Currently 3059 records
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Created on : 29 Apr 2004
Modified on : 02 Dec 2007

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Bibliographical entry (without author) :

Trial of labor in patients with a previous cesarean section: does maternal age influence the outcome? American Journal of Obstetrics and Gynecology 2004;190(4):1113-1118.

Author(s) :

Bujold E, Hammoud AO, Hendler I, Berman S, Blackwell SC, Duperron L, Gauthier RJ.

Year of publication :


URL(s) :…

Résumé (français)  :

Abstract (English)  :


This study was undertaken to evaluate the effect of maternal age on the rate of vaginal delivery and the rate of uterine rupture in patients undergoing a trial of labor (TOL) after a prior cesarean delivery.

Study design

A cohort study of all women with a live singleton fetus undergoing a TOL after a previous low-transverse cesarean delivery was performed between 1988 and 2002 in a tertiary care center. Patients were divided into 3 groups according to maternal age: less than 30 years old, 30 to 34 years old, and 35 years or older. Women with no prior vaginal delivery and with at least 1 prior vaginal delivery were analyzed separately. The rate of vaginal delivery and the rate of symptomatic uterine rupture were calculated. Multivariate logistic regression analyses were performed to adjust for potential confounding variables.


Of the 2493 patients who met the study criteria, there were 1750 women without a prior vaginal delivery (659, 721, and 370, respectively) and 743 women with a prior vaginal delivery (199, 327, and 217, respectively). The rate of uterine rupture was comparable between the groups (2.0%, 1.1%, 1.4%, P = .404 and 0%, 0.3%, 0.9%, P = .312). Successful vaginal delivery was inversely related to maternal age (71.9%, 70.7%, 65.1%, P = .063, and 91.5%, 91.1%, 82.9%, P = .005). After adjusting for confounding variables, maternal age equal to or greater than 35 years old was associated with a lower rate of successful vaginal delivery in patients without prior vaginal delivery (odds ratio [OR] 0.73, 95% CI: 0.56-0.94), and in patients with a prior vaginal delivery (OR: 0.47, 95% CI: 0.29-0.74).


Patients who are 35 years or older are more prone to have a failed TOL after a prior cesarean delivery.

Sumário (português)  :

Comments :

Argument (français) :

Les femmes de plus de 35 ans auraient moins de chance de réussir un AVAC.

Argument (English):

Argumento (português):

Keywords :

➡ c-section/caesarean ; evidence-based medicine/midwifery ; maternal age

Author of this record :

Cécile Loup — 29 Apr 2004

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