Oligohydramnios
Oligohydramnios is a medical condition in pregnancy characterized by a of amniotic fluid, the fluid that surrounds the fetus in the , in the amniotic sac. The limiting case is anhydramnios, where there is a complete absence of amniotic fluid. It is typically diagnosed by when the amniotic fluid index (AFI) measures less than 5 cm or when the single deepest pocket (SDP) of amniotic fluid measures less than 2 cm. Amniotic fluid is necessary to allow for normal fetal movement, lung development, and cushioning from compression. Low amniotic fluid can be attributed to a maternal, fetal, placental or cause and can result in poor fetal outcomes including death. The of the fetus is dependent on the etiology, gestational age at , and the severity of the oligohydramnios.
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