Polyhydramnios

Definition

Polyhydramnios is the presence of excessive amniotic fluid surrounding the unborn infant.

Considerations

Amniotic fluid surrounds and cushions the infant throughout development. Decreased or excessive amounts of amniotic fluid may be associated with abnormalities in the fetus.

Polyhydramnios may result fromfailure of the fetus to swallow and absorb amniotic fluid in normal amounts. This may occur as a result of gastrointestinal disorders, neurological problems, or a variety of other causes. Polyhydramnios may also be related to increased fluid production, as is the case with certain fetal lung disorders.

Sometimes, no specific cause for polyhydramnios is found.

Common Causes

What to expect at your health care provider's office

This condition is discovered during pregnancy, and evaluated prior to delivery. If a fetal abnormality is found, the baby will be delivered in a hospital with specialists who can provide immediate evaluation and treatment.

Documenting polyhydramnios may include:

  • history of this pregnancy
  • history of past pregnancies and health of the children delivered
  • other family history
  • ultrasound scans of the fetus

Polyhydramnios
Polyhydramnios
Review Date: 12/1/2005
Reviewed By: Sharon Roseanne Thompson, M.D., M.P.H., Department of Obstetrics & Gynecology, Brigham and Women's Hospital, Boston, MA. Review provided by VeriMed Healthcare Network.
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