Vasa Previa

Definition

Occurs when fetal vessels traverse the fetal membranes over the internal cervical os.

Causes:

  • Velamentous insertion of the cord.
  • Or joining an accessory (succenturiate)
  • placental lobe to the main cord of the placenta.

Vasa Previa Diagnosis

  • Usually suspected when either spontaneous or artificial rupture of the membranes is accompanied by:
    • Painless Fresh Vaginal Bleeding
  • During pregnancy by Doppler US
    • This condition is associated with high perinatal mortality.
    • So Immediate Action is Delivery by Emergency Cesarean Section