Cardiorespiratory Response to Exercise before and after Pulmonary Valve Replacement in Patients with Repaired Tetralogy of Fallot: A Retrospective Study and Systematic Review of the Literature

To describe and analyze the cardiopulmonary responses to exercise for patients with repaired tetralogy of Fallot (TOF) before and after pulmonary valve replacement (PVR) and compare our results with those in the literature.Between 1973 and 2012, 278 patients had a first-time PVR after TOF repair. During their evaluations, 76 patients (27%) had exercise testing before PVR, and 63 (23%) had at least one test after PVR. There were 17 patients...