oligohydramnios
Pronunciation: oh-li-go-high-DRAM-nee-ohs
Condition of decreased amniotic fluid volume during pregnancy.
Full Definition
Oligohydramnios is a condition characterized by abnormally low levels of amniotic fluid (less than 5th percentile for gestational age or amniotic fluid index <5 cm). This condition can result from various factors including fetal renal abnormalities, intrauterine growth restriction, post-term pregnancy, or premature rupture of membranes. Oligohydramnios poses significant risks to fetal development, including pulmonary hypoplasia, limb deformities, and growth restriction due to compression. The condition requires careful monitoring as it may necessitate early delivery depending on severity and underlying cause. Neonates born after oligohydramnios may experience respiratory complications and require intensive monitoring in the immediate postnatal period.
Usage
Usage note: Opposite of polyhydramnios (excess amniotic fluid); anhydramnios refers to complete absence of fluid.
In Context
- "Severe oligohydramnios was detected at 32 weeks, prompting increased fetal surveillance." — prenatal consultation
- "The neonate required respiratory support due to pulmonary hypoplasia associated with prolonged oligohydramnios." — NICU admission note