Vasa previa

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  • Fetal blood vessels from the umbilical cord run in close proximity to cervical os
    • Seldom recognized prior to vessel disruption

Risk Factors


  • Painless bleeding occurs during SROM
    • Fetal in origin (mother's life is not at risk)
    • May lead to fetal exsanguination

Differential Diagnosis

Abdominal Pain in Pregnancy

The same abdominal pathologies as non-pregnant patients, plus:

<20 Weeks

>20 Weeks

Any time

  • Hemorrhagic ovarian cyst
  • Fibroid degeneration or torsion
  • Ovarian torsion
  • Constipation

Vaginal Bleeding in Pregnancy (>20wks)



See Also


See Also

Vaginal Bleeding (Main)