If the injection of prostaglandin is not used, RU 486 may result in a failed abortion. Then a doctor would surgically extract the fetus. To do this, the doctor inserts a long needle into your abdomen until the tip of the needle penetrates the uterus. He then injects one of these substances which eventually kills the fetus. Saline is a poisonous substance which eventually kills the fetus.
Prostaglandin causes the muscle tissue of the mother to push the fetus out of the uterus.
The labor which precedes birth is usually long and painful. On the third day, the membranes are ruptured. An ultrasound is used to locate the lower extremities. The doctor then uses large forceps to grasp a leg, and pull it down into the vagina. After the body is delivered, the skull is lodged at the cervical opening.