GUIDE
VBAC is successful 60-80% of the time and offers shorter recovery with lower surgical risk. Repeat C-section is predictable and eliminates labor risk but carries cumulative surgical complications. ACOG supports VBAC for most eligible candidates.
If you've had one C-section, this is probably the biggest decision of your second pregnancy.
Track from day one, again
“I think VBAC is wonderful option for many women. But it's a personal decision that should be made after carefully weighing the risks and benefits and your plans to have more children.”
Dr. Patricia Santiago-Munoz, MD, OB-GYN, UT Southwestern Medical CenterIf your first baby was born by C-section, your second pregnancy comes with a decision your first didn't have: try for a vaginal birth (VBAC) or schedule a repeat C-section. It's a decision with real tradeoffs in both directions, and the evidence is more nuanced than most online discussions suggest.
ACOG has supported VBAC since 2010, stating that "most women with one previous cesarean delivery with a low-transverse incision are candidates for and should be counseled about VBAC." The evidence shows that VBAC is successful 60-80% of the time, carries lower overall risk than repeat C-section for most women, and avoids the cumulative surgical risks that increase with each cesarean.
But VBAC isn't right for everyone. The 0.5-0.7% risk of uterine rupture is small but serious. Not all hospitals offer VBAC. And 20-40% of TOLAC attempts end in C-section anyway — an unplanned C-section that carries higher complication rates than a planned one. The right choice depends on your specific medical history, your provider's assessment, and your informed preferences.
| Aspect | VBAC | Repeat C-Section |
|---|---|---|
| Recovery time | 2-3 weeks to feel functional. Shorter hospital stay (1-2 days). | 6-8 weeks. Hospital stay 2-4 days. Lifting and driving restrictions. |
| Success rate | 60-80% of TOLAC attempts result in vaginal delivery. | 100% — it's a planned surgery with a known outcome. |
| Major risk | Uterine rupture (~0.5-0.7%). Rare but life-threatening. Requires emergency C-section. | Surgical complications increase with each C-section — adhesions, bladder injury, abnormal placentation. |
| Future pregnancies | Successful VBAC makes future vaginal births more likely and avoids cumulative surgical risk. | Each additional C-section increases risk of placenta accreta, uterine rupture, and surgical complications. |
| Predictability | Labor timing and duration are unpredictable. May end in unplanned C-section. | Scheduled date, known timeline. No uncertainty about the process. |
| Breastfeeding | Earlier skin-to-skin and faster milk production typical with vaginal delivery. | May experience slight delay in milk coming in. Positioning adjustments needed around incision. |
| Emotional experience | Many women feel empowered by VBAC. Failed TOLAC can feel disappointing. | Predictability reduces anxiety for some. Others grieve not experiencing vaginal birth. |
Benefits are strongest when VBAC is successful. Discuss your predicted success rate with your provider.
The risk of uterine rupture is why ACOG recommends VBAC only at facilities with emergency surgical capability.
Planned C-sections have lower complication rates than emergency C-sections.
Cumulative risk is especially relevant if you plan to have more than two or three children.
Whether this baby arrives by VBAC or repeat C-section, Tinylog helps you log feeds, sleep, and diapers from hour one — so you can stay on top of newborn care while managing life with your older child.
The strongest VBAC candidates have a low transverse uterine incision from their prior C-section, no history of uterine rupture, no contraindications to vaginal delivery (like placenta previa), and deliver at a facility with emergency surgical capability. Additional favorable factors include prior vaginal delivery (even before the C-section), spontaneous labor onset, BMI under 30, and age under 35. Our detailed VBAC guide covers candidacy requirements and preparation in depth.
The reason for your first C-section matters too. If it was for a non-recurring reason — breech presentation, fetal distress, or failure to progress — VBAC success rates are higher than if the reason was a persistent factor. Women who dilated past 6 cm or who pushed before their first C-section tend to have higher VBAC success rates.
Your provider can use the MFMU (Maternal-Fetal Medicine Units Network) calculator to estimate your individual success probability based on your specific factors. This gives you a percentage that helps frame the conversation — there's a meaningful difference between a 40% predicted success rate and an 80% one.
Start by getting your operative report from your first C-section. Your incision type is the most important medical factor — a classical (vertical) incision generally rules out VBAC. Then discuss your individual success probability with your provider.
Consider your life context. Recovery time differs significantly between vaginal and cesarean birth, and that matters more with a toddler at home. A 6-8 week recovery from a repeat C-section with lifting restrictions and a child who wants to be picked up is a logistical challenge that deserves honest consideration. On the other hand, the predictability of a scheduled C-section can be genuinely valuable when you need to arrange childcare.
Finally, consider your family planning. If you plan to have more children, the cumulative surgical risk of multiple C-sections is a significant factor favoring VBAC. The risk of placenta accreta (abnormal placental attachment into the uterine wall) increases from 0.2% after one C-section to 2.1% after three. For families planning only two children, this factor carries less weight.
A low transverse uterine incision (the most common) has the lowest rupture risk for VBAC. A classical (vertical) incision significantly increases rupture risk and is generally a contraindication. Your operative report from your first C-section contains this information.
The MFMU VBAC calculator uses your specific factors (age, BMI, prior vaginal delivery, reason for first C-section) to estimate your individual success probability. A 70%+ predicted success rate is generally considered favorable.
If you attempt VBAC, have a C-section plan ready too. Discuss in advance what would trigger a transition from TOLAC to C-section. Being mentally prepared for both outcomes reduces distress if plans change.
This guide is for informational purposes only and is not a substitute for professional medical advice. Consult your healthcare provider for guidance specific to your situation.
