Which of the following factors is a positive predictor for a successful TOLAC?

The likelihood of a successful trial of labor after cesarean (TOLAC) is significantly influenced by the indication for the prior cesarean delivery. A previous cesarean due to a recurrent indication, such as a non-repetitive issue like fetal distress or poor labor progression, typically has a better prognosis for successful vaginal delivery than those whose cesareans were performed for other reasons. This is because some indications, like breech presentation, may not affect subsequent labor if the current pregnancy presents differently. Successfully achieving vaginal delivery after a prior cesarean is more likely when the previous indication does not carry over to the current pregnancy, leading to favorable outcomes for TOLAC.

In contrast, the other factors listed are associated with decreased success rates. Labor induction carries risks that can complicate scenarios for TOLAC, and obesity may lead to increased surgical complications or impede progress during labor. Additionally, women with no prior spontaneous vaginal delivery (SVD) may have concerns related to their body's readiness for labor processes, affecting TOLAC success. Therefore, the presence of a recurrent indication for a prior cesarean is a strong positive predictor for successful TOLAC outcomes.