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Understanding Twin-to-twin transfusion syndrome

By Dr. Kamala Doan, MD · · Hematology

Patients often ask us about twin-to-twin transfusion syndrome. Here is what our Hematology clinicians want you to know.

About this topic

Topic: twin-to-twin transfusion syndrome. A neonatal anemia that is characterized by an increased number of arteriovenous anastomoses deep in the placenta. These capillary connections occur in the cotyledon portion of the placenta. Unidirectional flow can occur in these arteriovenous anastomoses and result in shunting of blood towards one twin and away from the other when the arteriovenous anastomoses are unbalanced.

Related care

This article is for general information and does not replace advice from your clinician.