Ebstein's anomaly
This is a defect of the tricuspid valve, which controls blood flow between the heart's right atrium, which is an upper chamber of the heart, and the right ventricle, a bottom chamber of the heart. The valve is positioned lower than normal into the right ventricle instead of remaining between the atrium and the ventricle. The incorrectly formed ventricle is too small and the atrium too large, and neither functions properly. The valve often allows blood to leak from the ventricle into the atrium. This defect often occurs along with other heart defects.
Some patients have symptoms early in life including heart failure and life-threatening irregular heartbeats (arrhythmias). Other patients may have no signs or symptoms until adulthood. Treatment is with medications or with surgery.
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