CONFERENCE PROCEEDING
Against all odds: Determinants of success in vaginal birth after three or more
cesareans (VBA3C)
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Publication date: 2025-10-24
Eur J Midwifery 2025;9(Supplement 1):A90
ABSTRACT
Abstract overview:
The rate of cesarean sections (CS) is increasing worldwide, including operative deliveries
after a previous CS. Each subsequent operative delivery increases the risk of maternal
complications, such as rupture of the uterine scar, abnormal placentation in subsequent
pregnancies and adhesions.
Aims and objectives:
The aim of the study was to describe the population of women who decide to attempt labor
after at least three cesarean deliveries and to identify factors that promote the success of this
type of labour.
Method:
This retrospective study involved the analysis of medical records of women admitted to a
tertiary-level maternity hospital between 2017 and 2024. The inclusion criterion was a history
of three or more previous cesarean deliveries. Women with a diagnosis of intrauterine fetal
demise at the time of admission were excluded. Multivariate logistic regression was used to
identify factors associated with successful VBA3C. The outcome variable was the mode of
birth. Based on literature review, three predictors were included: epidural anesthesia, history
of prior vaginal birth, and spontaneous labor onset. Due to the limited sample size (n = 62),
the number of predictors was restricted to ensure model stability.
Results:
Of the 62 women who attempted VBA3C, 32 (51.6%) achieved vaginal labor. In the logistic
regression analysis, it was found that the use of epidural anesthesia (OR = 22.88; p = 0.006)
and a history of previous vaginal birth (OR = 20.34; p = 0.008) significantly increased the
chances of a successful VBAC. Spontaneous onset of labor did not reach statistical
significance.
Conclusion:
VBAC after three or four CS is possible, especially if the woman has a history of successful
vaginal birth. Each birth requires individual maternal risk management considering potential
complications resulting from multiple cesarean sections. Epidural can contribute
significantly to the success of vaginal birth.