tetralogy of Fallot

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tetralogy of Fallot (te-tral-ŏji ŏv fa-loh) n. a form of congenital heart disease in which there is pulmonary stenosis, enlargement of the right ventricle, and a ventricular septal defect over which the origin of the aorta lies. The affected child is blue (cyanosed). [ E. L. A. Fallot (1850–1911), French physician]

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