VBACs and repeat C-sections both carry their own set of risks. According to the Mayo Clinic, the most serious risk associated with VBAC is uterine rupture, which could result in an emergency C-section and possibly a hysterectomy. The risk of this occurring is less than one percent, though, which is actually lower than the risks that could come with repeat C-sections, like bladder or bowel injuries, heavy bleeding, and placental issues.