uterine atony


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uterine atony

failure of the myometrium to contract after delivery of the placenta; associated with excessive bleeding from the placental implantation site.

u·ter·ine at·o·ny

(yū'tĕr-in at'ŏ-nē)
Failure of the myometrium to contract after delivery of the placenta; associated with excessive bleeding from the placental implantation site.
References in periodicals archive ?
Prolonged labour13 and multi-parity leads to an increased risk of post-partum hemorrhage because of uterine atony in third world, leading to increased maternal mortality and morbidity16.
The most common indication of EOH in our study was uterine atony (60%) followed by morbidly adherent placenta (20%) and uterine rupture (20%).
Although uterine atony remained the main cause of MT, there was a rising trend for placental abnormalities (especially placenta accreta) in the second 5-year group compared with the first 5-year group (34% vs.
Regarding post partum complications 5(10%) patients had post partum hemorrhage due to uterine atony, 4(8%) had post partum hemorrhage due to retained placenta, 2(4%) had perineal tears, 3(6%) had subtotal hysterectomy and 36(72%) didn't had complications.
However the cause of uterine prolapse is unknown, predisposing factors include severe tenesmus, over relaxation of the pelvic musculature, uterine atony, incomplete placental seperation and flaccid mesovaria (Jutkowitz, 2005; Nothling et al.
Post partially, uterotonics were administered forthwith to prevent uterine atony.
At the pathological level, the causes of excessive bleeding at CD are uterine atony (commonly after prolonged labour), uterine trauma (excessive bleeding from uterine incision or additional tears laterally into the broad ligament or vertically down the lower segment) and placental site bleeding (associated with placenta praevia, previous CD and/or morbidly adherent placenta).
Methods: The study was conducted at the Dow University of Health Sciences and Civil Hospital Karachi from January to July 18, 2012, and comprised women aged 18-35 years, parity 1-6 and gestational age 31-41 weeks, who developed or were admitted with primary postpartum haemorrhage due to uterine atony in whom medical treatment had failed.
Uterine atony is the most common cause of PPH (70%), but genital tract trauma (i.
Over time, uterine atony develops and then it atrophies.
The most common indication of EOH in our study was uterine atony (25%) followed by morbidly adherent placenta (21%) and uterine rupture (17%).