Pulmonary regurgitation (PR) is an important determinant of outcome after tetralogy of fallot (TOF) repair. Pulmonary regurgitation frequently occurs after surgical correction of tetralogy of fallot. The physiologic impact of PR on the right ventricle remains incompletely understood. Patients (n = 24) with magnetic resonance imaging after TOF repair were identified. PR was quantified using phase contrast (PC) analysis of main pulmonary artery flow and differential right and left ventricular stroke volumes.
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