Under normal circumstances, postpartum hemorrhage is one of the most severe complications that can occur during childbirth.

Postpartum hemorrhage can be caused by several reasons: The first is mainly due to uterine atony leading to bleeding, which is relatively common and generally requires the administration of potent oxytocics to promote uterine contraction; The second is mainly due to local tears in the vagina or cervix leading to bleeding; The third is primarily caused by issues such as placental adhesion or implantation; The fourth is due to disorders in the body's coagulation function, leading to uncontrolled bleeding.