Professional
Technical
In the Industry Vocabulary Test
uterine atony
Pronunciation: AT-oh-nee
Failure of the uterine muscle to contract effectively after delivery, leading to excessive bleeding.
Full Definition
Uterine atony is the most common cause of postpartum hemorrhage, characterized by inadequate uterine muscle contraction following delivery of the placenta. The lack of effective myometrial contraction prevents compression of spiral arteries, resulting in continued bleeding from the placental site. Risk factors include prolonged labor, multiple gestation, polyhydramnios, and grand multiparity. Management typically involves uterine massage, oxytocic medications, and in severe cases, surgical intervention. Prompt recognition and treatment of uterine atony are critical for preventing maternal morbidity and mortality.
In Context
- "Uterine atony was managed with methylergonovine and bimanual compression." — Postpartum hemorrhage protocol
- "Risk factors for uterine atony include chorioamnionitis and prolonged oxytocin use." — Quality improvement review
Also known as
uterine inertia
Contrasted with
uterine contraction
Don't confuse with
uterine atonement