[TM and bidimensional echocardiography of subvalvular aortic stenoses].
28 children (age: 7.5 +/- 4.6 years) and five adults with a subvalvular aortic stenosis were evaluated by TM and bidimensional echography. Long axis parasternal and apical two cavities-aorta views seem the most reliable to determine the anatomical varieties (type I in diaphragm: 25 cases; type II fibromuscular: 5 cases; tunnel: 1 case; isolated mitral abnormalities: 2 cases). 24 patients were catheterized. Among the various echocardiographic parameters that were measured, the ratio parietal thickness/left ventricular diameter in telesystole appears best correlated to the hemodynamic gradient (r = 0.65).
D000293:Adolescent; D000328:Adult; D001020:Aortic Stenosis, Subvalvular / Q000175:diagnosis*; D002312:Cardiomyopathy, Hypertrophic / Q000175:diagnosis*; D002648:Child; D002675:Child, Preschool; D004452:Echocardiography / Q000379:methods*; D005260:Female; D006439:Hemodynamics; D006801:Humans; D007223:Infant; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies
Echocardiographie TM et bidimensionnelle des sténoses aortiques sous-valvulaires.