What condition may result in postpartum hemorrhage due to an enlarged uterus and continued lochial discharge?

Subinvolution of the uterus is a condition characterized by the failure of the uterus to return to its pre-pregnancy size and state after childbirth. Normally, the uterus contracts and reduces in size as it expels the remaining placental tissue and blood. However, in cases of subinvolution, the uterus remains enlarged and may continue to bleed, leading to postpartum hemorrhage.

This situation is often accompanied by a continued lochial discharge, which is the vaginal bleeding that women experience after delivery. The lochia is comprised of blood, mucus, and uterine tissue that is expelled as the uterus heals. If subinvolution occurs, there may be persistent or heavier than normal discharge due to retained placental fragments or other causes that prevent the uterus from contracting properly.

The other conditions listed do not directly cause postpartum hemorrhage related to an enlarged uterus and lochial discharge. Mastitis involves inflammation of breast tissue and is unrelated to uterine size or discharge. Subgaleal hemorrhage refers to bleeding between the skull and the periosteum in neonates, which is not related to postpartum issues of the uterus. Neonatal hypoglycemia is a metabolic condition affecting newborns and does not pertain to uterine involution or bleeding after