tetralogy of Fallot

The tetralogy of Fallot is a complex of congenital malformation of the heart which consists of a ventricular septal defect, right ventricular hypertrophy with outflow tract obstruction (infundibular stenosis), rightward-displaced overriding aorta, and pulmonary stenosis. Patients with the tetralogy are usually cyanotic, but may not be (the so-called "pink tet"). Remediation is surgical. (The condition is a "tetralogy" because it has four basic elements, by the way.)

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