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oligohydramnios
Pronunciation: oh-li-go-hi-DRAM-nee-os
A condition of decreased amniotic fluid during pregnancy that can lead to fetal complications and NICU admission.
Full Definition
Oligohydramnios refers to a deficiency of amniotic fluid during pregnancy, typically defined as an amniotic fluid index less than 5 cm or deepest vertical pocket less than 2 cm. This condition can result from fetal urinary tract abnormalities, placental insufficiency, or prolonged rupture of membranes. Infants affected by severe oligohydramnios may develop pulmonary hypoplasia, growth restriction, and characteristic facial deformities requiring intensive neonatal care.
Usage
Usage note: Often confused with polyhydramnios (excessive fluid); verify correct prefix when editing.
In Context
- "Severe oligohydramnios during the second trimester resulted in pulmonary hypoplasia requiring immediate respiratory support." — neonatal intensive care admission note
- "The infant's growth restriction was attributed to chronic oligohydramnios secondary to renal agenesis." — genetic counseling report
Also known as
decreased amniotic fluid
amniotic fluid deficiency
Contrasted with
polyhydramnios
normal amniotic fluid volume
Don't confuse with
polyhydramnios
anhydramnios