The course of treatment depends on the amount of abnormal uterine bleeding, whether the fetus is developed enough to survive outside the uterus, the amount of placenta over the cervix, the position of the fetus, the parity (number of previous births) for the mother, and the presence or absence of labor.

Early in pregnancy, transfusions may be given to replace maternal blood loss. Medications may be given to prevent premature labor, prolonging pregnancy to at least 36 weeks. Beyond 36 weeks, the benefits of additional infant maturity have to be weighed against the potential for major hemorrhage.

Cesarean section is the method for delivery. It has proven to be the most important factor in reducing maternal and infant death rates.

The maternal prognosis (probable outcome) is excellent when managed appropriately. This is done by hospitalizing those at risk who are exhibiting signs and symptoms, and by performing C-section delivery.

Maternal complications include major hemorrhage, shock, and death. The risk of infection and formation of blood clots or thromboembolism also increases, as does the likelihood of the need for a blood transfusion.

Prematurity (infant is less than 36 weeks gestation) is responsible for about 60% of infant deaths secondary to placenta previa. Fetal blood loss or hemorrhage may occur because of the placenta tearing away from the uterine wall during labor. It may also occur with entry into the uterus during a C-section delivery.

Call your health care provider if vaginal bleeding in pregnancy occurs at any point in the pregnancy. Placenta previa can endanger both the mother and the baby.