Amniotic fluid discordance

An amniotic fluid discordance is usually defined as a difference in amniotic fluid volumes in a twin pregnancy. It is a predictor of poor fetal outcome in twin pregnancy related complications.

Pathology

Causes of amniotic fluid discordance include:

• twin-twin transfusion syndrome
• placental insufficiency
• intrauterine infection
• congenital (e.g. renal agenesis in one twin)
• premature rupture of membranes in one of the twins (in MCDA / DCDA pregnancies)

See also

• discordant fetal growth
• disparate fetal growth