Placental Abruption

Placental Abruption Symptoms and Treatment

Placental abruption is the separation of the placenta from the uterine lining. This condition usually occurs in the third trimester but can occur any time after the 20th week of pregnancy. Only about 1% of all pregnant women will experience placental abruption, and most can be successfully treated depending on what type of separation occurs.
The signs and symptoms include one or more of the following:

  • Vaginal bleeding (although about 20% of cases will have no bleeding)
  • Uterine tenderness
  • Rapid contractions
  • Abdominal pain
  • Fetal heart rate abnormalities

Any vaginal bleeding in the third trimester should be reported to your health care provider immediately. Other causes of vaginal bleeding could be placenta previa. Your health care provider will know the proper diagnosis.

What actually happens in placental abruption?

The placenta is part of your baby’s life support system. It transfers oxygen and nutrients to your baby. When the placenta separates from your uterine lining before labor it can interrupt the transportation of oxygen and nutrients to your baby. Placental abruption can only truly be diagnosed after birth when the placenta can be examined. There are a few methods that are used to try to make this diagnosis during pregnancy so that proper treatment can be applied.
These include:

What causes placental abruption and what are the treatments?

Treatment depends on the severity of the separation, location of the separation and the age of the pregnancy. There can be a partial separation or a complete (also called a total) separation that occurs. There can also be different degrees of each of these which will impact the type of treatment recommended. In the case of partial separation, bed rest and close monitoring may be prescribed if the pregnancy has not reached maturity. In some cases, transfusions and other emergency treatment may be needed as well.

In a case with a total or complete separation, delivery is often the safest course of action. If the fetus is stable, vaginal delivery may be an option. If the fetus is in distress or the mom is experiencing severe bleeding, then a cesarean delivery would be necessary. Unfortunately, there is no treatment that can stop the placenta from detaching and there is no way to reattach it.

Any type of placental abruption can lead to premature birth and low birth weight. In cases where severe placental abruption occurs, approximately 15% will end in fetal death.

However, women are more at risk for this condition if they:

When should I call my healthcare provider?

You should call your health care provider immediately if you experience bleeding in your third trimester. Only your health care provider can make a proper diagnosis for the cause of late-term bleeding. The outcome of a placental abruption diagnosis is improved with fast and accurate treatment.

Want to Know More?

Compiled using information from the following sources:

1. William’s Obstetrics Twenty-Second Ed. Cunningham, F. Gary, et al, Ch. 35.