Professional
Technical
In the Industry Vocabulary Test
anhydramnios
Pronunciation: an-hi-DRAM-nee-os
Complete absence of amniotic fluid, representing the most severe form of oligohydramnios.
Full Definition
Anhydramnios is the complete absence of amniotic fluid in the amniotic cavity during pregnancy. This condition is more severe than oligohydramnios and is often associated with severe fetal anomalies, particularly renal agenesis or severe renal dysplasia. The absence of amniotic fluid can lead to pulmonary hypoplasia, growth restriction, and characteristic facial features known as Potter sequence. Early diagnosis through ultrasound is crucial for appropriate counseling and management decisions.
Usage
Usage note: Often confused with severe oligohydramnios; anhydramnios specifically means complete absence of fluid.
In Context
- "The ultrasound revealed anhydramnios at 20 weeks gestation, raising concerns about fetal renal function." — Ultrasound report
- "Anhydramnios was associated with bilateral renal agenesis and predicted poor neonatal outcomes." — Case study documentation
Also known as
absent amniotic fluid
Contrasted with
polyhydramnios
normal amniotic fluid volume
Don't confuse with
oligohydramnios
severe oligohydramnios