Persistent abdominal pain with peritoneal signs
Vaginal bleeding
Shock
Palpable<unk>  defect
Loss of fetal station
Fetal bradycardia, variable decelerations, evidence of hypovolemia
Uterine rupture
Emergent delivery
Septic abortion
Placental abruption
Placenta previa
Vasa previa
Placenta accreta
Preterm labor