Tetralogy of fallot overview

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editors-In-Chief: Priyamvada Singh, M.B.B.S. [2], Assistant Editor-In-Chief: Kristin Feeney, B.S. [3]

Overview

Tetralogy of Fallot is a congenital heart defect which classically has four anatomical components: obstruction to right ventricular outflow, right ventricular hypertrophy, ventricular septal defect, and overriding of aorta. It accounts for approximately 10% of all forms of congenital heart disease. It is the most common cause of cyanosis in children over one year of age (blue baby syndrome).