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polyhydramnios
Pronunciation: pol-ee-hahy-DRAM-nee-os
Excessive accumulation of amniotic fluid during pregnancy.
Full Definition
Polyhydramnios refers to an abnormal increase in amniotic fluid volume, typically defined as an amniotic fluid index (AFI) greater than 24 cm or a single deepest pocket greater than 8 cm. This condition can result from maternal diabetes, fetal anomalies affecting swallowing (such as esophageal atresia), or multiple gestations. Polyhydramnios increases the risk of preterm labor, placental abruption, cord prolapse, and fetal malpresentation. The condition often requires specialized monitoring and may influence delivery planning and method.
Usage
Usage note: Also called hydramnios; distinguish clearly from oligohydramnios in documentation.
In Context
- "Mild polyhydramnios was detected at 32 weeks with AFI measuring 26 cm." — Prenatal ultrasound report
- "The patient developed acute polyhydramnios, prompting immediate evaluation for fetal anomalies." — Maternal-fetal medicine consultation
Also known as
hydramnios
increased amniotic fluid
Contrasted with
oligohydramnios
Don't confuse with
oligohydramnios