Emergency childbirth rupture. Bleeding after delivery (postpartum hemorrhage) After delivery of the baby, a uterus that is not contracting (atonic uterus), ruptured uterus, remaining parts of placenta or baby or infected remaining parts of placenta or baby can cause severe bleeding. Postpartum bleeding is usually managed preventatively by massaging the lower abdomen (fundal massage), which increases contraction of the uterus and stops bleeding. Additionally, steady traction is applied to the cord to prevent trauma, cord avulsion (tearing of the umbilical cord), uterine inversion, and retained placental products, all of which can increase blood loss and/or the risk of infection. Postpartum hemorrhage is
Umbilical ring vessels. Cranially it lies ventral to the umbilical vein and on each side extends into the tissue of the lateral pillars of the cord bounding the coelom. When the myotomic downgrowths reach the ventral aspect, their anterior portions (i.e. the sheaths of the recti muscles) become continuous with the tissue of the umbilical ring. Umbilical ring The umbilical ring is a dense fibrous ring surrounding the umbilicus at birth. At about the sixth week of embryological development, the midgut herniates through the umbilical ring; six weeks later it returns to the abdominal cavity and rotates around the superior mesenteric artery.