uterine atony
Pronunciation: AT-oh-nee
Failure of the uterine muscle to contract adequately after delivery, leading to postpartum hemorrhage.
Full Definition
Uterine atony is the most common cause of postpartum hemorrhage, occurring when the uterine muscle fails to contract effectively after delivery of the baby and placenta. Normal uterine contractions compress spiral arteries and control bleeding from the placental site. When atony occurs, these vessels remain dilated, leading to excessive bleeding. Risk factors include prolonged labor, rapid delivery, multiple gestation, polyhydramnios, chorioamnionitis, and certain medications. Treatment involves uterine massage, oxytocic agents, and in severe cases, surgical intervention. Prompt recognition and management are crucial to prevent maternal morbidity and mortality.
Usage
Usage note: Document blood loss quantification and interventions for quality metrics.
In Context
- "Uterine atony was treated with fundal massage and intravenous oxytocin administration." — Postpartum care documentation