74 Obstetrics and Gynecology Board Review •••
❍ Label the structures of the pelvis.
❍ What are the blood vessels most commonly injured during vulvar hematomas?
Branches of the pudendal artery: Inferior rectal, transverse perinatal, and posterior labial arteries.
❍ In patients with placenta previa in the current pregnancy, the risk of accreta is approximately __% for those
undergoing their third cesarean deliveries
40%.
❍ What is the most frequent cause of serious postpartum hemorrhage?
Uterine atony.
❍ In the management of postpartum uterine atony, fundal compression has not stopped the bleeding. At what
dose, would you request oxytocin to be begun?
Oxytocin, up to 40 units per liter, with rapid infusion.
❍ Several surgical techniques are available to control bleeding during a cesarean delivery including (4):
(1) Hypogastric artery ligation.
(2) Bilateral uterine artery ligation (O’Leary sutures).
(3) B-Lynch technique.
(4) Hysterectomy.