Skip to Content
Home > Wellness > Health Library > VBAC: Uterine Scar Rupture
The most rare yet most serious risk of
vaginal birth after cesarean (VBAC) is that the scar
on the uterus may break open (rupture) during labor. Women who have a low transverse cesarean
scar have a lower risk of rupturing than women who have a vertical incision scar.
About 5 to 9 out of 1,000 women (0.5% to 0.9%) with a low transverse scar
have a uterine rupture during a trial of labor.1
A woman's risk of uterine rupture increases with:
It is likely that the women who have a rupture have other
risk factors, which are things that make them more likely to have this complication.
Having had a vaginal delivery during another pregnancy lowers the risk of
uterine rupture during VBAC. Women who have delivered vaginally and later had a
cesarean delivery have about one-fourth the risk of women who have had a
cesarean delivery but no vaginal delivery.1
In the rare event that a uterine scar ruptures, it can be dangerous to
both the mother and her infant.
Depending on severity, a rupture can:
American College of Obstetricians and Gynecologists
(2010). Vaginal birth after previous cesarean delivery. ACOG
Practice Bulletin No. 115. Obstetrics and Gynecology,
March 28, 2011
Sarah Marshall, MD - Family Medicine & Femi Olatunbosun, MB, FRCSC - Obstetrics and Gynecology
How this information was developed to help you make better health decisions.
To learn more visit Healthwise.org
© 1995-2013 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.
Our interactive Decision Points guide you through making key health decisions by combining medical information with your personal information.
You'll find Decision Points to help you answer questions about:
Get started learning more about your health!
Our Interactive Tools can help you make smart decisions for a healthier life. You'll find personal calculators and tools for health and fitness, lifestyle checkups, and pregnancy.
Feeling under the weather?
Use our interactive symptom checker to evaluate your symptoms and determine appropriate action or treatment.
Genesis HealthCare System | 1-800-322-4762