Clinical Trial: Doppler or Amniocentesis to Predict Fetal Anemia

Study Status: Completed
Recruit Status: Completed
Study Type: Interventional




Official Title: Minimally Invasive Management of Rh Alloimmunization: Can Amniotic Fluid DeltaOD450 Measurements Be Replaced by Doppler Studies?

Brief Summary:

In pregnancies complicated by Rhesus disease, the mother has developed antibodies which cross the placenta and can cause anemia and death of the fetus. When the anemia is detected on time, the fetus can be saved by giving it blood transfusions during the pregnancy.

The standard test to predict whether the fetus needs a blood transfusion is examination of the amniotic fluid. To obtain this fluid a needle has to be inserted in the womb, which has a risk of preterm delivery, infection, and making the disease worse. This is called amniocentesis.

A new safe test, using Doppler ultrasound, has been developed to possibly replace the amniocentesis.

The aim of this study is to compare the new Doppler test with the standard amniocentesis. If the Doppler test is at least as good, this safe test may replace the amniocentesis in the management of pregnancies with Rhesus disease.