Guise et al (2004) performed a systematic review of research concerning VBAC and uterine rupture. They found that uterine rupture resulted in: 0 maternal deaths; 5% perinatal deaths (baby); and 13% hysterectomy. They conclude that:
'Although the literature on uterine rupture is imprecise and inconsistent, existing studies indicate that 370 (213 to 1370) elective caesarean deliveries would need to be performed to prevent one symptomatic uterine rupture.'
The overall risk of fetal death during TOLAC is approximately 20:100,000 TOLACs or 1/5000. For term pregnancies, the reported risk of fetal death with uterine rupture is less than 3%.