“…Other putative risk factors for hematoma formation are pressure necrosis, inadequate hemostasis at the time of tissue repair, primiparity, preeclampsia, multiple gestation, vulvovaginal varicositis, a prolonged second stage, and clotting abnormalities. 1 Puerperal hematomas may be classified as vulvar, vaginal, vulvovaginal, or retroperitoneal. Vulvar hematomas most often result from injuries to branches of the pudendal artery, including the posterior rectal, transverse perineal, or posterior labial artery, while vaginal hematomas may result from injuries to the descending branch of the uterine artery.…”