Why is the ninth month called September?
tetralogy of Fallot n.
See Fallot's tetralogy.
|tetralogy of Fallot |
A congenital malformation of the heart characterized by a defect in the ventricular septum, misplacement of the origin of the aorta, narrowing of the pulmonary artery, and enlargement of the right ventricle. It is named after its describer, French physician Etienne-Louis Arthur Fallot (1850-1911).