subvalvular aortic stenosis

sub·val·vu·lar a·or·tic ste·no·sis

congenital narrowing below the aortic valves due to a membrane or to a muscular hypertrophy frequently confused with valvular aortic stenosis.

subvalvular

below the heart valves.

subvalvular aortic stenosis
see aortic subvalvular stenosis.
References in periodicals archive ?
Congenital heart defects that have been associated with UAPA are the followings; tetralogy of Fallot, ventricular septal defect (VSD), right aortic arch, truncus arteriosus, patent ductus arteriosus (PDA), CoA, subvalvular aortic stenosis, transposition of the great arteries and scimitar syndrome (2, 3, 5).
Subvalvular aortic stenosis was an important differential diagnostic distinction from aortic stenosis.