Vaginal Birth After Cesarean (Maternal-Fetal Medicine Units Network)

Estimates the probability of successful VBAC using variables available early in pregnancy.

Age, years*

years

Pre-pregnancy weight*

Height*

Arrest disorder for previous cesarean delivery*

Obstetric history*

No previous vaginal historyA

Previous vaginal delivery only before previous cesarean deliveryB

Previous VBACC

Treated chronic hypertension*