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Uptodate Reference Title
Anatomy of tetralogy of Fallot
Anatomy of tetralogy of Fallot
Tetralogy of Fallot is characterized by a large VSD, an aorta that overrides the left and right ventricles, obstruction of the right ventricular outflow tract, and right ventricular hypertrophy. As a result of the substantial obstruction of the right ventricular outflow tract, there is right-to-left shunting through the VSD, resulting in cyanosis.