Pulmonary regurgitation (PR) is the most important residual lesion remaining after repairing tetralogy of Fallot. Through a thorough review of the literature, we attempted to determine the Pathophysiology of chronic right ventricular volume load after tetralogy of Fallot repair .The risks , benefits, indications and timing of pulmonary valve replacement are controversies that we are going to pay attention to them in this article.
Tetralogy of fallot(TOF)
Pulmonary regurgitation (PR)
pulmonary valve replacement(PVR)
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