Obstetric and Gynecological Nursing - The Carter Center

1. Separation of the placenta
Mechanism of placental separation
It is brought by the contraction and retraction of the uterine
musules. Separation usually begins in the center of the
placenta. At the area of the separation the blood sinuses are
torn across. 30to 60ml of blood is connected between
maternal surface of the placenta and the decidual basalis. The
uterine contractions detaches the placenta from the uterus
and the placenta forced out of the upper uterine segment into
the lower utrine segment.
1. Centeral separation
Advantage – Centerally retro placental clot is formed
Aids separation by exerting pressure at the mid point of
placental attachment and helps to strip the adherent lateral
boarders to peel the memberanes off the uterine wall
2. Separation begins at the level of the deep sponge layer of
the deciduas. If the placenta is embedded deeply separation
will be difficult.
3. Separation occurs at the lower edge of placenta
Signs for placental separation
1. Gush of blood
2. The fundus rises at the level of umblicus
3. Uterus becomes globular
4. Cord lengthen
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