• Placental Abruption

    (Premature Separation of Placenta; Ablatio Placentae; Abruptio Placentae)


    Placental abruption occurs when the placenta separates from the uterus before the fetus is delivered. The placenta is the organ that provides nourishment for the fetus while it is still in the uterus. In a healthy pregnancy, the placenta remains attached to the uterine wall until after the fetus is delivered.
    Some form of the condition affects about one in every 150 births. In very severe forms, placental abruption can cause death to the fetus. This is uncommon. Death of the mother from placental abruption is very rare.
    Placental abruption can cause:
    • Premature delivery
    • Fetal anemia
    • Low birth weight
    • Significant blood loss for the mother
    • Fetal death
    Placental Abruption
    Placental Abruption
    Copyright © Nucleus Medical Media, Inc.


    The direct cause of placental abruption is not clearly understood. It may be a combination of several events. These may include:
    • Impaired formation and structure of the placenta
    • Low oxygen levels inside the uterus
    • Rupture of a uterine artery or vein which causes bleeding between the placenta and the uterine wall
    • Injury to the abdomen from an accident or a fall
    • Sudden decrease in the volume of the uterus, from significant loss of amniotic fluid or from the delivery of a first twin

    Risk Factors

    Factors that may increase your chance of placental abruption:
    • Previous placental abruption in a prior pregnancy
    • High blood pressure during pregnancy—pre-eclampsia
    • Pregnancy during older age
    • Multiple previous deliveries
    • Excessively distended uterus
    • Smoking during pregnancy
    • Drug misuse, especially cocaine


    In the early stages, you may not have symptoms. When symptoms occur, they may include:
    • Vaginal bleeding
    • Abdominal pain
    • Back pain
    • Rapid contractions
    • Soreness in the uterus
    • Feeling faint
    • Baby moving less


    Your doctor will ask about your symptoms and medical history. A physical exam will be done. A pelvic exam will also be done to examine your reproductive organs.
    Tests may include:
    • Ultrasound
    • Blood coagulation profile to determine how long it takes for your blood to clot


    Talk with your doctor about the best treatment plan for you. Treatment options include:

    Intravenous Treatments

    Fluids may be given by IV to replace lost fluids. Blood transfusions may also be given to replace lost blood supply.
    You and your fetus will be carefully monitored for signs of distress or shock, including abnormal heart rates.

    Emergency Cesarean Delivery

    If danger exists fyour or your fetus, an emergency cesarean section may be done. If both you and your fetus are at low risk of complications and your fetus is full-term, the you may deliver vaginally.


    To help reduce your chance of placental abruption:
    • Avoid taking drugs and smoking during pregnancy.
    • Receive proper and regular prenatal care throughout your pregnancy.
    • Promptly treat conditions, such as high blood pressure.


    American Pregnancy Association http://www.americanpregnancy.org

    The American Congress of Obstetricians and Gynecologists http://www.acog.org


    The Canadian Women's Health Network http://www.cwhn.ca

    The Society of Obstetricians and Gynaecologists of Canada (SOGC) http://sogc.org


    Bleeding in pregnancy, placenta previa, placental abruption. Stanford Children's Health website. Available at: http://www.stanfordchildrens.org/en/topic/default?id=bleeding-in-pregnancyplacenta-previaplacental-abruption-90-P02437. Accessed June 6, 2016.

    Neilson JP. Interventions for treating placental abruption. Cochrane Database for Syst Rev. 2003;(1):CD003247.

    Placental abruption. EBSCO DynaMed website. Available at: http://www.ebscohost.com/dynamed. Updated December 19, 2014. Accessed June 6, 2016.

    Placental abruption: Abruptio placentae. American Pregnancy Association website. Available at: http://americanpregnancy.org/pregnancy-complications/placental-abruption. Updated August 2015. Accessed June 6, 2016.

    Tikkanen M. Etiology, clinical manifestations, and prediction of placental abruption. Acta Obstet Gynecol Scand. 2010;89(6):732-740.

    Revision Information

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