Is VBAC safe?
For most people with one prior low-transverse cesarean, VBAC is a reasonably safe option, with vaginal birth succeeding in roughly 60 to 80% of attempts and serious complications remaining uncommon. ACOG considers planned VBAC a safe choice for many people with a prior cesarean, though the exact numbers vary depending on your health history, why you had your first cesarean, and how your current pregnancy is progressing. The main risk that makes VBAC different from a first vaginal birth is uterine rupture — a tear along the old scar — which is rare but serious enough that any VBAC should happen at a hospital equipped to respond quickly.
Every pregnancy carries some risk, medicated or not, vaginal or cesarean, and VBAC is no exception to that. What matters is whether your particular combination of factors — the type of uterine incision you had, how many prior cesareans, your reason for the first one, and your current pregnancy's health — puts you in a lower-risk or higher-risk group. Your provider can walk through your specific chart and history with you; a general statistic about VBAC success or risk can't substitute for that conversation. This is a decision made together with your care team, not one an article can make for you.
Who is a good candidate for VBAC?
The best candidates for VBAC typically have had one prior cesarean with a low-transverse (side-to-side, lower uterine segment) incision, no other uterine surgery, and a current pregnancy without complications like placenta previa. People who've previously had a vaginal birth, either before or after a cesarean, tend to have higher success rates with VBAC than people attempting it for the first time. Providers also look closely at why the first cesarean happened: a breech baby or fetal distress in one pregnancy doesn't necessarily predict what will happen this time, while a truly narrow pelvis or labor that failed to progress despite strong contractions might change the picture.
Some situations make VBAC riskier or generally not recommended, including a prior classical (vertical, upper-uterus) incision, more than one prior cesarean depending on your provider's protocols, or certain complications in the current pregnancy such as placenta previa. Being pregnant with twins or having a baby in breech position doesn't automatically rule out VBAC, but it does change the conversation with your provider. None of these factors are things you can reliably determine on your own from memory of a prior surgery — ask your current provider to review your operative notes, which describe exactly what kind of incision was made.
What are the risks of uterine rupture during VBAC?
Uterine rupture, where the old cesarean scar separates during labor, happens in a small minority of VBAC attempts, most often described as under 1%, though the exact figure depends on the type of prior incision and other individual factors. It's rare, but it's the reason VBAC is recommended only at hospitals with staff and equipment available to perform an emergency cesarean quickly if needed. Rupture is more likely with induced or augmented labor than with labor that starts on its own, which is part of why your provider will talk with you specifically about how labor gets started if VBAC is being planned.
Warning signs during labor that require immediate medical attention include sudden, severe abdominal pain that doesn't ease between contractions, a sudden change in the baby's heart rate pattern on the monitor, vaginal bleeding that's heavier than expected, or a strong sense that something feels suddenly and significantly wrong. Hospital staff watch continuously for these signs during a VBAC labor, which is one reason continuous fetal monitoring is standard practice. If you notice any of these yourself, tell your nurse or provider immediately rather than waiting to see if the feeling passes.
How is a planned VBAC different from a planned repeat cesarean?
A planned repeat cesarean is scheduled in advance, with a known timeline and no labor required, while a planned VBAC means going into labor, either spontaneously or with induction, and being ready to move to a cesarean if labor doesn't progress safely. Recovery after an uncomplicated vaginal birth is generally faster than recovery from surgery, often with less pain medication needed and a shorter hospital stay for many people. Repeat cesareans carry their own accumulating risks with each surgery, including longer operating times, more scar tissue, and a somewhat higher chance of complications like placenta accreta in future pregnancies.
There's no single better choice between the two paths — it depends on your history, your priorities, and what your provider's assessment shows about your individual risk profile. Some people strongly value avoiding surgery and its recovery time; others value the predictability of a scheduled cesarean and would rather not labor at all. Both are legitimate, reasonable choices, and both deserve to be discussed with your provider using your actual medical history rather than generic statistics pulled from somewhere else.
How can you prepare for a VBAC?
Preparing for VBAC starts with choosing a hospital and provider experienced in supporting VBAC labors and equipped for an emergency cesarean if one becomes necessary. Ask directly about the facility's VBAC experience, their monitoring protocol during labor, and how quickly they can move to an emergency cesarean if the situation calls for it. Request a copy of your operative report from the prior cesarean early in this pregnancy so your current provider has the actual incision details rather than a secondhand description of what happened.
During labor, continuous fetal monitoring is standard for VBAC, and you'll likely have an IV placed in case rapid access to fluids or medication is needed. Many people planning VBAC find it helpful to write out birth preferences that include what they'd want if a cesarean does become necessary, since thinking it through beforehand is easier than deciding in the moment. Talk with your provider about pain management options too — an epidural doesn't lower your chances of a successful VBAC and can generally be used the same way it would be in any other labor.
What happens if VBAC doesn't succeed?
If labor doesn't progress safely or a concerning sign appears, the plan shifts to a cesarean, and this is a normal, expected part of how VBAC is offered, not a failure of your body or your choices. A trial of labor after cesarean, often shortened to TOLAC, is the clinical term for attempting VBAC, and it's understood from the outset that not every attempt ends in a vaginal birth. Recovery from an unplanned cesarean after labor is generally similar to recovery from a first cesarean, and it does not mean anything went wrong that you could have prevented.
It can be emotionally hard to plan for a vaginal birth and end up with surgery instead, and that disappointment is real and worth acknowledging rather than brushing aside. Talking with your provider afterward about what happened and why can help you understand the specific reasons in your case, separate from general statistics about VBAC. If you're processing difficult feelings about how your birth went, a postpartum follow-up appointment is a reasonable place to bring that up, and support from your care team is available.