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Vaginal Birth after Cesarean
Aka: Vaginal Birth after Cesarean, Trial of Labor after Cesarean, VBAC, TOLAC
- Criteria (ACOG)
- One or two prior low-transverse cesarean sections
- Adequate Pelvis for delivery
- No contraindication below
- Physician immediately available during active labor
- Capable of monitoring labor
- Immediate cesarean delivery available
- Contraindications
- Prior classic or T-shaped incision
- Prior transfundal uterine surgery
- Uterine scar other than low-transverse cesarean scar
- Contracted Pelvis
- Medical or obstetric complications preclude VBAC
- Criteria above not met
- Precautions
- Cervical Ripening agents have higher risk of rupture
- Contraindicated in VBAC patients
- Complications (VBAC considered to be relatively safe)
- Uterine Rupture (38 per 10,000 trials of labor)
- See Uterine Rupture for risks
- Perinatal death (1.4 per 10,000 trials of labor)
- Hysterectomy (3.4 per 10,000 trials of labor)
- References
- Guise (2004) BMJ 329:19-25
- References
- (1999) Int J Gynaecol Obstet 66:197-204