Quick answer: For many women with one previous caesarean through a low transverse (bikini-line) scar, a planned vaginal birth after caesarean (VBAC) is a reasonable, evidence-backed option. Around 72–75% of women who attempt it succeed (RCOG 2015; ACOG/AAFP). The main serious risk is uterine rupture, which is uncommon — roughly 0.5%, about 1 in 200 with a single low-transverse scar (RCOG 2015). VBAC is not safe for everyone — a classical (vertical) scar, a previous uterine rupture, or placenta previa rule it out. Whether VBAC is right for you is a decision to make with your obstetrician, at a hospital equipped to do an emergency caesarean immediately if needed. This article is to help you have that conversation — not to make the choice for you.
VBAC and TOLAC: What the Words Mean
These two terms get used interchangeably but mean slightly different things:
- TOLAC — Trial of Labour After Caesarean. This is the attempt: going into labour and trying for a vaginal birth when you’ve had a caesarean before. Anyone planning a vaginal birth after a caesarean is, technically, having a TOLAC.
- VBAC — Vaginal Birth After Caesarean. This is the outcome: a TOLAC that succeeds in a vaginal delivery.
So every VBAC starts as a TOLAC, but a TOLAC can also end in a repeat caesarean if labour doesn’t progress safely. The alternative to TOLAC is a planned (elective) repeat caesarean, sometimes written ERCS.
Neither path is “the right one” in the abstract. Both are legitimate, safe choices for the right woman in the right setting. The job is to figure out which fits your history and your facility.
Who Is a Candidate for VBAC?
National and international guidelines broadly agree on the profile of a good VBAC candidate. According to FOGSI (Federation of Obstetric and Gynaecological Societies of India), planned TOLAC may be offered to a woman with (FOGSI: Birth after Cesarean Section):
- A single previous lower-segment (low transverse) caesarean
- A single baby (singleton) in the head-down (cephalic) position
- A term pregnancy (around 37 weeks or more)
Your chances of a successful VBAC are higher if you also have (ACOG/AAFP):
- A previous vaginal birth (before or after your caesarean) — this is one of the strongest predictors of success
- A previous caesarean done for a one-off reason (e.g. the baby was breech, or in distress) rather than “labour never progressed”
- Going into labour spontaneously
None of these is a hard requirement — they shift the odds, not the eligibility.
Who Is NOT a Candidate
VBAC is contraindicated — meaning a planned repeat caesarean is the safer choice — for women with (FOGSI; RCOG 2015; ACOG/AAFP):
| Situation | Why VBAC is not advised |
|---|---|
| Previous classical (vertical) or “T”/“J”-shaped uterine scar | These scars are far weaker and carry a much higher rupture risk — figures range from roughly 2% up to ~9% in older estimates (ACOG), versus about 0.5–0.7% for a low transverse scar (RCOG/MFMU registry) |
| Previous uterine rupture | A uterus that has ruptured once is very likely to rupture again |
| Previous surgery opening the uterine cavity (e.g. some myomectomies) | Same reason — a deep scar in the muscle wall |
| Placenta previa (placenta covering the cervix) | Vaginal birth is unsafe regardless of any prior caesarean |
| Two or more prior caesareans | Offered only very cautiously, after specialist counselling, as rupture risk rises with each scar |
| Any reason a vaginal birth would be unsafe this pregnancy | e.g. baby in a difficult position, certain medical conditions |
The type of scar on your uterus matters more than the scar on your skin. Your visible bikini-line cut does not tell you what your uterine incision was — surgeons can use different cuts inside and out. You need your previous operation notes / discharge summary to know your true uterine scar type. Ask for them.
VBAC Success Rates — What the Numbers Actually Say
When women attempt a VBAC, most succeed:
- RCOG: the success rate of planned VBAC is 72–75% (pooled ~74%) (RCOG Green-top Guideline No. 45, 2015).
- ACOG: TOLAC is associated with roughly a 74% likelihood of a vaginal birth; about 75% for women with one prior caesarean (ACOG/AAFP).
So as a realistic range, about 3 in 4 attempts succeed. The other ~1 in 4 end in a repeat caesarean — usually because labour stalls, not because of an emergency. Your personal odds depend heavily on why you had your first caesarean and whether you’ve ever birthed vaginally; your obstetrician can give you a more individual estimate.
Benefits vs Risks — Honestly
There is no risk-free birth. The decision is a comparison between two sets of risks — VBAC and planned repeat caesarean — not a choice between “safe” and “unsafe”.
Potential benefits of a successful VBAC
- Faster recovery and shorter hospital stay than abdominal surgery
- No surgical wound and the complications that can come with it
- Lower risk in future pregnancies — every caesarean raises the risk of placenta problems (previa, accreta) next time
- Avoiding the risks of repeated major surgery if you plan more children
The key serious risk: uterine rupture
This is the risk that makes VBAC a decision for a properly equipped facility. During labour, the old uterine scar can, rarely, give way — a uterine rupture — which is a true emergency for both mother and baby.
How likely is it? With a single low transverse scar, about 0.5–0.7% (≈1 in 150–200) — RCOG cites ~0.5%, the US MFMU registry ~0.7% (RCOG 2015). ACOG puts the range at about 0.5–0.9% for an optimal candidate, and broadly 0.2–1.5% depending on circumstances (ACOG/AAFP). For comparison, rupture is far higher with a classical/vertical scar (~2–9% in older estimates) — which is exactly why those women are advised against VBAC (ACOG).
So the honest framing is: uterine rupture is uncommon, but it is serious when it happens. The whole point of doing a VBAC in a hospital with immediate emergency-caesarean capability is that, if it happens, the team can act in minutes. The risk is small and it is managed — not ignored.
Risks of the alternative (planned repeat caesarean)
A repeat caesarean is not “the safe option” — it is major abdominal surgery, with its own risks: longer recovery, surgical complications, and a steadily rising risk of dangerous placenta accreta/previa in future pregnancies. This matters especially if you want more children. Both choices carry risk; they’re just different risks.
What Makes a VBAC Safe
Guidelines are consistent that VBAC should happen in a setting that can respond to a rupture immediately (RCOG 2015; ACOG/AAFP):
- A facility that can perform an emergency caesarean without delay — an obstetrician, anaesthetist, theatre and a blood supply available on site, around the clock.
- Continuous monitoring of the baby’s heart rate during labour — a sudden change in the baby’s heartbeat is the earliest and most reliable warning sign of a rupture.
- A clear, fast plan for switching to a caesarean if labour stalls or any warning sign appears.
- Caution with induction/augmentation — some labour-starting drugs increase rupture risk, so these decisions need an experienced obstetrician.
If you are attempting a VBAC and develop sudden constant abdominal pain, vaginal bleeding, a change in your contractions, or reduced baby movements, go to your maternity hospital immediately — these can be early signs of a problem with the scar.
If your local facility can’t reliably provide an immediate emergency caesarean, a planned repeat caesarean is the safer call — and that’s a legitimate medical reason, not a failure.
Why VBAC Rates Are Low in India
India has the opposite problem to “too many normal deliveries”: caesarean rates are high and rising. NFHS-5 (2019–21) found the national caesarean rate at 21.5% — but 47.4% in private hospitals versus 14.3% in public hospitals (NFHS-5 analysis, Lancet Regional Health SE Asia). The WHO notes that caesarean rates above ~10% of births don’t reduce maternal or newborn deaths (WHO) — so a large share of these are not medically necessary.
Once a woman has had one caesarean, the default in much of Indian practice becomes “once a caesarean, always a caesarean.” A few reasons VBAC is offered less often here:
- Defensive practice. A repeat caesarean is predictable and schedulable; a TOLAC carries a small chance of an emergency that brings legal and reputational exposure. The cautious choice for the system can override the reasonable choice for the woman.
- Facility readiness varies. Not every hospital can guarantee 24/7 immediate emergency-caesarean capability and continuous monitoring — without that, VBAC genuinely isn’t safe there.
- Convenience and incentives. Planned surgery is easier to schedule, and in some private settings is more profitable than a long, unpredictable labour (ORF analysis).
- Counselling gaps. Many women are simply never told VBAC is an option.
None of this means your obstetrician is wrong to recommend a repeat caesarean — your history or your facility may genuinely make it the safer choice. But it does mean it’s fair and reasonable to ask whether VBAC is an option for you, rather than assuming it isn’t.
Questions to Ask Your Obstetrician
Bring these to your antenatal visit. The aim is an informed conversation with the doctor who knows your full history — not to second-guess their judgement.
- What type of incision did I have on my uterus (not just my skin) last time? Can I get a copy of my previous operation notes?
- Based on my history, am I a candidate for VBAC? If not, what specifically rules it out?
- What do you estimate my chances of a successful VBAC are?
- Can this facility perform an emergency caesarean immediately, at any hour, if needed?
- How will the baby be monitored during labour?
- What would make you switch to a caesarean during labour?
- What are the risks for me of a repeat caesarean, especially if I want more children?
- If I want to plan a repeat caesarean instead, is that equally reasonable?
A good obstetrician will welcome these questions. If you’d like a second, unhurried opinion to help you weigh the options, that’s completely appropriate too.
A Word on Birth-Mode Pressure
You may hear that a vaginal birth is “more natural” or, on the other side, that a caesarean is “safer and simpler.” Both framings are unfair. A safe birth that brings home a healthy mother and baby is a good birth — whichever route it takes. Women who plan a VBAC and women who choose a repeat caesarean are both making responsible decisions. Don’t let anyone — family, social media, or anyone else — shame you for the choice you and your obstetrician make together.
Frequently Asked Questions
Is VBAC safe?
For a suitable candidate — typically one previous low-transverse caesarean — VBAC is considered a safe, reasonable option when done at a facility that can perform an emergency caesarean immediately and monitor the baby continuously (RCOG 2015). The main serious risk, uterine rupture, is uncommon (about 1 in 200 with one low-transverse scar). It is a decision to make with your obstetrician, based on your history and your facility.
What are my chances of a successful VBAC?
Across studies, about 72–75% of women who attempt a VBAC have a vaginal birth (RCOG; ACOG/AAFP). Your individual odds are higher if you’ve birthed vaginally before, or if your previous caesarean was for a one-off reason like a breech baby.
How dangerous is uterine rupture?
It is the most serious risk of VBAC and a genuine emergency — but it is uncommon, around 0.5% (1 in 200) with a single low-transverse scar (RCOG 2015). Doing VBAC in a properly equipped hospital exists precisely so the team can respond within minutes if it happens.
Can I have a VBAC after two caesareans?
Sometimes, but it is offered only very cautiously and after specialist counselling, because rupture risk rises with each caesarean (FOGSI). This is a conversation for an experienced obstetrician.
My first caesarean was for “failure to progress.” Can I still try VBAC?
Often, yes — but your chances of success may be somewhat lower than for a woman whose caesarean was for a one-off reason like breech. Discuss your specific situation with your obstetrician.
Why did my doctor recommend a repeat caesarean without mentioning VBAC?
It may be the genuinely safer choice for your history or your facility — or VBAC simply may not have come up. It’s completely reasonable to ask directly, “Am I a candidate for VBAC?” and hear the specific reasons either way.
This article is general information for parents in India and is based on guidance from FOGSI, ACOG, RCOG and WHO. It is not medical advice and not a substitute for an in-person assessment. The choice between a VBAC and a planned repeat caesarean is a decision for you and your obstetrician, at a suitably equipped facility, based on your full medical history. For any urgent concern in pregnancy or labour — severe pain, heavy bleeding, reduced baby movements — contact your obstetrician or go to the nearest maternity hospital immediately, or call 112 (national emergency) or 108 (ambulance).
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