Alterations in regional right ventricular shape in patients following tetralogy of Fallot repair involving a transannular Patch

Background Patients who undergo surgical repair of Tetralogy of Fallot (TOF) often experience abnormal remodeling of the right ventricle (RV), notably with chamber dilatation and associated dysfunction. The ideal surgical technique is controversial, but RV outflow tract repair utilizing a transannular patch (TAP) is employed to overcome the RV outflow tract obstruction in many patients with TOF. We hypothesized that analysis of both RV volumes and curvature in the different regions of the right ventricle can unmask differences in RV remodeling patterns following repair using these two surgical approaches.