What is the best predictor for a successful VBAC?

Pregnancy and Postpartum Care for Everyone

The success of a Vaginal Birth After Cesarean (VBAC) can be influenced by various factors. While individual circumstances may vary, some predictors associated with a higher likelihood of successful VBAC include:

  1. Prior Vaginal Birth: Women who have had a previous successful vaginal birth are generally more likely to have a successful VBAC.
  2. Reason for Previous Cesarean: If the previous cesarean was performed for reasons that are unlikely to recur, such as breech presentation or fetal distress, the chances of VBAC success may be higher.
  3. Type of Cesarean Incision: A low-transverse incision in the uterus during the previous cesarean is associated with a higher VBAC success rate compared to other types of incisions.
  4. Interval Between Pregnancies: A longer interval between pregnancies may increase the likelihood of VBAC success. However, a very long interval may present its own set of considerations.
  5. Maternal BMI: A lower Body Mass Index (BMI) may be associated with a higher likelihood of VBAC success.
  6. Maternal Age: Younger maternal age is sometimes associated with a higher VBAC success rate.
  7. Spontaneous Onset of Labor: Going into labor spontaneously rather than induction may contribute to a higher chance of VBAC success.

It's important to note that these factors are general trends, and individual cases may vary. The decision to attempt a VBAC should be made in consultation with healthcare providers who can assess the specific circumstances of each pregnancy. Additionally, factors such as uterine rupture risk, medical history, and current health conditions play a role in the decision-making process.

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