Answer: That is said, it's impossible to predict with any certainty who will be able to have a vaginal delivery and who will end up with a repeat c-section. Attempting a VBAC is called a trial of labor after cesarean (TOLAC). Overall, about 60 to 80 percent of women who attempt a VBAC deliver vaginally. This are the factors which would make it less likely for women to have a successful VBAC are:
*Being an older momBeing...
* over weight...
*Having a baby with a high birth weight (over 4,000 grams, about 8.8 pounds)....
*Having your pregnancy go beyond 40 weeks of gestation...
*Having a short time between pregnancies (18 months or less)...