Ebstein anomaly is characterized by a severely malformed and displaced tricuspid valve. This results in regurgitation, or leakage, of blood backwards from the right ventricle into the right atrium. This syndrome also includes an opening in the septum between the atria (ASD). The ASD allows oxygen-poor blood to flow from the right atrium into oxygen-rich blood of the left atrium causing cyanosis (blueness of the skin). Surgery is available for most patients, when indicated. Patients with Epstein’s disease may be prone to develop cardiac arrhythmia.