VBAC may not be as risky as we thought
While a trial of labor after a previous cesarean section is associated with a slightly higher risk of uterine rupture than a repeat surgical delivery, the additional risk is less than previously thought.
While a trial of labor after a previous cesarean section is associated with a slightly higher risk of uterine rupture than a repeat surgical delivery, the additional risk is less than previously thought.
A systematic review of the research literature determined that women who have had a previous C/S and who elect a trial of labor have an increased risk of uterine rupture of 2.7 per 1,000 cases, compared with women who elect a repeat cesarean delivery. Put another way: 370 elective cesarean deliveries need to be performed to prevent one symptomatic uterine rupture.
In addition, most uterine ruptures do not have serious consequences. In the studies reviewed, no maternal deaths were related to rupture, the additional risk of perinatal death from rupture of a uterine scar was 1.4 per 10,000, and the additional risk of hysterectomy was 3.4 per 10,000.
Low recurrence found after uterine rupture in pregnancy
May 17th 2025A new study presented at the 2025 ACOG Annual Clinical & Scientific Meeting found that while recurrent uterine rupture is rare, patients with a history of rupture face a significantly increased subsequent risk of preterm delivery.
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