Oligohydramnios

**Semantic type:** Finding

**Definition:** A lower than normal quantity of amniotic fluid in the amniotic sac as compared to normal values. Typically associated with an amniotic fluid index (AFI) of less than 5 cm or a single maximum vertical pocket (MVP) of less than 2 cm.

**Synonyms:** - OLIGOHYDRAMNIOS - Reduced Amniotic Fluid