This study will monitor device performance and outcomes in subjects undergoing implantation of the Edwards SAPIEN 3 Transcatheter Pulmonary Valve System with Alterra Adaptive Prestent in the post-approval setting

This is a single arm, prospective, multicenter post-approval study.

Inclusion Criteria:

1. Native or surgically-repaired RVOT with severe PR
2. Clinically indicated for pulmonary valve replacement
3. Planned for treatment with the Alterra prestent and SAPIEN 3 THV

Exclusion Criteria:

1. Inability to tolerate an anticoagulation/antiplatelet regimen
2. Active bacterial endocarditis or other active infections

Subjects with severe PR who have a native or surgically-repaired RVOT, are clinically indicated for pulmonary valve replacement, and are planned for treatment with the Alterra prestent and SAPIEN 3 THV