Pregnancy After a Previous C-Section: Understanding VBAC and Repeat Caesarean

If you have had a previous Caesarean delivery, planning the next birth involves reviewing your previous operation, your current pregnancy, your preferences, and the resources available at the hospital. Some women may be suitable for a trial of labour after Caesarean, while others may be advised to have a planned repeat Caesarean.

What do TOLAC and VBAC mean?

A trial of labour after Caesarean (TOLAC) is an attempt to labour and give birth vaginally after a previous Caesarean. If the vaginal birth is successful, it is called a vaginal birth after Caesarean (VBAC). If labour does not progress safely or another concern develops, an emergency Caesarean may become necessary.

What does your obstetrician review?

Important factors include the type of incision made on the uterus during the previous Caesarean, the reason for that Caesarean, the number of previous Caesareans or other uterine operations, how the current pregnancy is progressing, fetal presentation, placental location, and whether the maternity unit can provide urgent Caesarean delivery if required. The skin scar does not reliably show the type of uterine incision, which is why previous operative records are useful.

Potential benefits and risks

When successful, VBAC avoids abdominal surgery and may offer a shorter recovery, less blood loss, and a lower infection risk compared with another Caesarean. However, TOLAC also carries risks. One rare but serious complication is rupture of the previous uterine scar, which can threaten both mother and baby and requires urgent treatment. A planned repeat Caesarean avoids labour-related scar rupture but is still major abdominal surgery and has its own short- and long-term risks.

Why hospital capability matters

A planned TOLAC should take place in a facility that can respond rapidly if an emergency develops. The final birth plan should therefore consider both individual clinical suitability and the capability of the chosen hospital.

What to bring to your consultation

If available, bring the previous Caesarean discharge summary and operative note, details of any complications, and records from the current pregnancy. Discuss your preferences early so that you and your obstetrician have time to review benefits, risks, and alternatives rather than making the decision late in pregnancy.

Sources reviewed

American College of Obstetricians and Gynecologists (ACOG): Vaginal Birth After Cesarean Delivery (VBAC), reviewed November 2024; ACOG guidance on Caesarean birth.

Medical review required before publication. Individual suitability for TOLAC or VBAC can only be determined after clinical assessment.