VBAC (Vaginal Birth After Cesarean) means attempting a vaginal delivery after you've previously had a C-section, rather than automatically scheduling another surgical birth. For many women, it's a genuinely safe and viable option — roughly 60–80% of women who attempt a VBAC succeed.
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VBAC (Vaginal Birth After Cesarean) means attempting a vaginal delivery after you've previously had a C-section, rather than automatically scheduling another surgical birth. For many women, it's a genuinely safe and viable option — roughly 60–80% of women who attempt a VBAC succeed. The benefits of a successful VBAC are real: faster recovery, avoiding major abdominal surgery, less risk of infection, and fewer complications in future pregnancies. The most important risk to understand is uterine rupture — where the C-section scar tears during labor — which occurs in about 0.5–1% of attempts. That's rare, but serious enough that VBAC should happen in a hospital with immediate surgical capability. VBAC tends to be a good fit if you had one previous low-transverse (horizontal) C-section, have no other complications, and are birthing in a facility prepared for emergencies. It's generally not recommended if you had a vertical uterine incision, placenta previa, or certain other risk factors. Importantly, a planned repeat C-section also carries its own risks — there's no automatically "safer" choice, which is why this decision is so personal. Talk with your OB as early as possible so they can review your specific surgical history, current pregnancy, and preferences together.
Where the AIs Agree
All responses agree VBAC stands for Vaginal Birth After Cesarean — delivering vaginally after a prior C-section.
All agree the success rate is approximately 60–80% for women who attempt a VBAC (also called TOLAC — Trial of Labor After Cesarean).
All identify uterine rupture as the primary serious risk, consistently citing a rate of 0.5–1%.
All agree VBAC is considered safe for appropriately selected candidates, particularly those with one prior low-transverse incision and no other contraindications.
All emphasize that VBAC should take place in a facility with immediate access to emergency surgical care.
All strongly recommend consulting a healthcare provider to evaluate individual medical history before making this decision.
Where the AIs Disagree
Gemini explicitly compared the risks of a *failed* VBAC (emergency C-section) vs. a *planned* repeat C-section, noting the failed attempt carries higher risk — a nuance the other responses didn't highlight.
Gemini and Claude both noted that repeat C-sections carry their own compounding risks in future pregnancies (e.g., placenta accreta), framing the comparison more holistically, while ChatGPT and Grok focused more narrowly on VBAC risks.
Grok referenced ACOG guidelines and a specific journal by name, lending more institutional authority to its safety claims, while others cited the same statistics without sourcing.
Claude was the most direct in noting that 20–40% of attempted VBACs end in surgical delivery, framing the "failure" rate more explicitly than the others.
Responses varied slightly in tone around uncertainty: Claude and Grok were more upfront that evidence is limited for higher-risk scenarios (e.g., multiples, prior vertical incision), while ChatGPT was somewhat more general.