Amniotic fluid index

Amniotic fluid index (AFI) is an estimate of the amount of amniotic fluid and is an index for the fetal well-being. It is a part of the biophysical profile.

What causes low amniotic fluid?

Leaking or rupture of membranes may be caused by a gush of fluid or a slow constant trickle of fluid. This is due to a tear in the membrane. Premature rupture of membranes can also result in low amniotic fluid levels in women pregnancy.