Risks of<unk>  include hemorrhage and infection. After the placenta is delivered, the uterus should contract down to close off all the blood vessels inside the uterus. If the placenta only partially separates, the uterus cannot contract properly, so the blood vessels inside will continue to bleed. A<unk>  thereby leads to hemorrhage.
Retained placenta
Circumvallate placenta
Fetal-maternal haemorrhage
Uterine malformation
Placental disease
Placental insufficiency
Umbilical cord prolapse
Wandering womb