VBAC may not be as risky as we thought

Article

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.

Newsletter

Get the latest clinical updates, case studies, and expert commentary in obstetric and gynecologic care. Sign up now to stay informed.

Recent Videos
Ousseny Zerbo, PhD, highlights benefits of influenza vaccination during pregnancy | Image Credit: divisionofresearch.kaiserpermanente.org.
Michael Ussher, PhD, highlights the benefits of vaping over smoking in pregnancy | Image Credit: sgul.ac.uk.
Neal Barnard, MD, FACC, highlights AMA's new breast cancer prevention guidelines | Image Credit: pcrm.org.
Zachary Wagner, PhD, discusses the harms of bias in reproductive care | Image Credit: ornsife.usc.edu.
Related Content
© 2025 MJH Life Sciences

All rights reserved.