Feto-Fetal Transfusion Syndrome in Multiple Pregnancies

The amniotic fluid is drained via needle, which is stubbed in the abdomen wall, connected to a tube into a plastic bag. The amniotic fluid pressure will be measured by a water manometer. A T-shape connector will be connected to the tube on one side, and to a short tube on the other side. The height of the fluid within the short tube will indicate the pressure. All the fluid will be drained to the plastic bag. The pressure and the blood flow of the fetuses will be measured during the procedure, depends on the drainage rate.