Gill Prabhcharan; Van Hook MD James W
Uterine atony refers to the corpus uteri myometrial cells inadequate contraction in response to endogenous oxytocin that is released in the course of delivery. It leads to postpartum hemorrhage as delivery of the placenta leaves disrupted spiral arteries which are uniquely void of musculature and dependent on contractions to mechanically squeeze them into a hemostatic state. Uterine atony is a principal cause of postpartum hemorrhage, an obstetric emergency. Globally, this is one of the top 5 causes of maternal mortality.
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Gill Prabhcharan; Van Hook MD James W, “Uterine Atony,” NEOMED Bibliography Database, accessed May 5, 2021, https://neomed.omeka.net/items/show/5434.