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  • Title: Small aortic valve annulus in children with fixed subaortic stenosis.
    Author: Thilenius OG, Campbell D, Bharati S, Lev M, Arcilla RA.
    Journal: Pediatr Cardiol; 1989; 10(4):195-8. PubMed ID: 2594572.
    Abstract:
    Twenty-one hearts with fixed subaortic stenosis (FSAS) were examined pathologically. Thirty children with no hemodynamically significant heart disease, 31 children with valvar aortic stenosis, and 25 children with FSAS were studied by echo- and angiocardiography. The following conclusions were drawn: (1) Patients with FSAS often have abnormal aortic valve leaflets as well as small aortic valve annulus. (2) A small aortic annulus/descending aorta ratio is probably present at birth, and may decrease with increasing age. (3) In some patients with FSAS the aortic valve annulus is too small for simple resection of the fibroelastic tissue. A Konno operation is needed for these patients. (4) M-mode echocardiography has not been useful in identifying abnormally small aortic valve annulus in FSAS patients.
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