(TOF) Congenital complex heart defect, named after the French physician Etienne Fallot and consisting of a large, short-circuit connection between the ventricles of the heart (VSD), a malposition of the body's aorta and a narrowing in the area of the outflow tract of the right ventricle (RVOTO). This can lead to reduced blood flow in the lungs. Sufferers of this condition have a blue-red colour of the face (cyanosis).
