Surgical repair of Ebstein's anomaly.

Ebstein's anomaly is a complex malformation that has been treated by various surgical techniques, with variable results, since 1958. In 1972, the authors developed a repair that consisted of plication of the free wall of the atrialized portion of the right ventricle, posterior tricuspid anuloplasty, and right atrial reduction. The repair is based on the construction of a monocusp valve by the use of the anterior leaflet of the tricuspid valve, which is usually enlarged in this anomaly. Not all patients are candidates for this procedure, however, because of significant abnormalities of the anterior leaflet such as inadequate size or attachment of the free edge of the leaflet to the ventricular wall. This report describes a ten-year experience with surgical repair of Ebstein's anomaly.