Development of a Double-Chambered Right Ventricle After Repair of Tetralogy of Fallot

Objectives. We sought to determine the frequency, etiology and progressive nature of midcavity obstruction in patients after primary repair of tetralogy of Fallot (TOF). Background. Midcavity obstruction (double-chambered right ventricle [DCRV]) represents a significant portion of reoperations in patients who have had TOF repair. This group is still poorly defined. Methods. A retrospective review of clinical, echocardiographic and...