Expulsion of placenta should be within

Expulsion of the placenta should be within 6 - 8 hours.
Placental abruption occurs when the placenta separates from the inner wall of the uterus before birth. Placental abruption can deprive the baby of oxygen and nutrients and cause heavy bleeding in the mother.
After the birth of a baby, the placenta is pushed out or delivered through the vagina which is the third stage of labour.