Preserving the pulmonary valve during early repair of tetralogy of Fallot: Anatomic substrates and surgical strategies

The majority of patients with TOF (>90%) have a bicuspid or tricuspid PV, which is the most favorable surgical anatomy for preserving the PV, independent of the degree of leaflet dysplasia. The recent introduction of more-complex PV plasty techniques, such as delamination plasty, allowed us to further extend the applicability of PV-preservation techniques.