Subchorionic hemorrhage of placenta in first trimester

A subchorionic hematoma, or subchorionic hemorrhage, happens when blood leaks out and collects between the uterine wall and the chorion around your baby. Subchorionic hematomas cause vaginal bleeding, but they are usually nothing to worry about. If you experience vaginal bleeding or spotting, be sure to see your doctor for a diagnosis. They will do an ultrasound to confirm whether your bleeding is caused by a subchorionic hematoma or something else.

What is a subchorionic hematoma?

Any bleeding during pregnancy warrants concern, but in the case of a subchorionic hematoma, bleeding is usually nothing to be too worried about. A subchorionic hematoma, also known as a subchorionic hemorrhage or subchorionic bleed, happens when blood leaks out and collects between the uterine wall and the chorion, the membrane around your growing baby. The chorion also makes up part of the placenta, and subchorionic bleeds often appear near the placenta.

A subchorionic hematoma is one of the most common causes of bleeding in the first trimester of pregnancy (usually during 10 to 20 weeks) and make up about 11 percent of cases. While vaginal bleeding is the number one sign of this condition, some women don't experience any bleeding and don't know they have it until an ultrasound reveals it.

Subchorionic hematomas usually resolve on their own, but occasionally, the bleeding is a sign of a miscarriage so it's best to see your doctor as soon as possible to confirm a diagnosis.

What causes a subchorionic hematoma in pregnancy?

Researchers aren't entirely sure what causes subchorionic hemorrhage in pregnancy, but research shows that in vitro fertilization (IVF) can raise the risk . In one study of 194 pregnancies , the frequency of subchorionic hematoma was significantly greater in women who underwent IVF than those who didn't. Moreover, uterine abnormalities, recurrent miscarriages, and pelvic infections are risk factors for a subchorionic hematoma.

What are the symptoms of a subchorionic hematoma in pregnancy?

Most women with a subchorionic bleed will experience some vaginal bleeding, but some don't experience any bleeding at all. Another common symptom is abdominal pain, cramping or contractions.

While some spotting during pregnancy is normal, contact your healthcare provider if you see vaginal bleeding to ensure it's nothing serious. For example, it's common for women to experience bleeding during early pregnancy from the fertilized egg implanting in the uterus. Let your doctor also know whether the bleeding is intermittent or constant, and if you're experiencing any other symptoms with it. She will most likely order an ultrasound to see if the fetus is doing ok.

Subchorionic hematoma can be a little difficult to diagnose because the membranes are thin and can be mistaken for a twin gestational sac or even amniotic fluid or placental tissue, so most doctors will check your baby's heart beat a few weeks later to make sure things are okay.

How is a subchorionic hematoma treated in pregnancy?

Subchorionic hematomas usually resolve on their own, but treatment for a subchorionic hematoma depends on your symptoms, how far along you are in your pregnancy, and the size and location of the subchorionic hematoma. If you're blood type is negative, then you may need a shot, to prevent complications in future pregnancies.

There are no medications approved for treatment of subchorionic hematoma at this time. Your doctor might order more routine ultrasounds to check on your baby's well-being

Bedrest has not been shown to improve pregnancy outcomes and is not recommended for subchorionic hematoma. In fact, it may cause other complications such as blood clots and depression. Emotional health is important too, and if your exercise routine gives you anxiety, then you can take it easy until the bleeding stops.

Will a subchorionic hematoma affect my pregnancy or baby?

A subchorionic hematoma pregnancy is usually nothing to worry about. However, some women with a subchorionic hemorrhage in the first trimester are at an increased risk for placental abruption later in the pregnancy, which is what happens when the placenta partly or completely detaches from the uterine wall. And if placental abruption occurs, it can cause heavy bleeding.

Large subchorionic hematomas are also associated with miscarriage and stillbirth, but the research is conflicting. Small studies have also linked subchorionic hematoma with preterm birth, preeclampsia, chorioamnionitis (infection), and intrauterine growth restriction (low birth weight). And some studies show that subchorionic hematomas have become more prevalent in twin pregnancies.

Is there any way to prevent a subchorionic hematoma from happening in pregnancy?

There isn't anything you can do to prevent a subchorionic bleed. However, you do want to make sure you're doing everything you can to encourage a healthy pregnancy, like eating a well-balanced diet and taking a prenatal vitamin.

If you experience vaginal bleeding, see your doctor to get a proper diagnosis and rule out other issues. Most women with a subchorionic hematoma go on to have healthy pregnancies and deliveries.

Is Subchorionic hemorrhage normal in early pregnancy?

Can a Subchorionic hemorrhage cause a miscarriage?

Does Subchorionic hemorrhage go away?

Can you have a healthy pregnancy with Subchorionic hemorrhage?