 Surgical repair of TOF often results in chronic pulmonary regurgitation PR with associated RV dilatation and dysfunction. Mounting evidence indicates that PR leads to significant long-term morbidity and mortality, including arrhythmias, sudden death, and right heart failure. Using CMR, there is a high prevalence of regional dysfunction and aneurysms in the RV in patients with repaired TOF. Current standard clinical practice in patients with repaired TOF, severe PR, ventricular dysfunction, andor clinical deterioration is to insert a bioprosthetic pulmonary valve to reduce the volume load on the RV. Although PVR can be achieved with low mortality, research has shown a persistent or worsening RV dysfunction postoperatively, despite a competent pulmonary valve. In patients with left ventricular LV aneurysms, surgical remodeling with aneurysm resection has been shown to improve LV mechanics. In view of the potentially deleterious effects of aneurysmal and akinetic wall segments on RV mechanics, researcher have recently modified their PVR surgical technique in selected patients to include surgical remodeling of the RV with resection of the akinetic wall segments. However, no studies have systematically compared the efficacy of PVR plus surgical RV remodeling to PVR alone. 