There are three forms of retained placenta, as follows:
Placenta Adherens
Placenta adherens is the most common form of retained placenta and happens if the uterus does not contract enough to deliver the placenta.
Trapped Placenta
A trapped placenta happens when the placenta detaches from the womb but is not delivered. This may occur if the cervix closes too soon, causing the placenta to become trapped.
Placenta Accreta
With placenta accreta, the placenta is attached to the uterine wall as opposed to the uterine lining. This can lead to severe bleeding and may necessitate a blood transfusion.
If not spotted following birth, symptoms may later develop, including:
- a fever
- a foul-smelling discharge from the vaginal area
- large pieces of tissue coming from the placenta
- heavy bleeding
- persistent pain
