discrete subaortic stenosis

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discrete subaortic stenosis2016-11-08T06:14:07+00:00

discrete subaortic stenosis


Definition A well-defined membranous or fibromembranous ring of tissue that partially or completely encircles the subvalvular aorta. Discrete subaortic stenosis may progress and cause severe left ventricular hypertrophy–VH and major aortic insufficiency–AI. 

Aetiology Uncertain, possibly inherited due to multiple genes, but more likely acquired due to abnormal flow patterns within the left ventricular vestibule

discrete subaortic stenosis image from New Medical Terms

discrete subaortic stenosis

Caption—from Eur J Echocardiogr (2008) Magnified view of left ventricular outflow tract (LVOT) and aortic valve (AV) from apical view showing eccentric moderate aortic regurgitation. LA, left atrium 

Management Operative correction often requires sharp ring resection with or without septal myectomy.

Prognosis Post-resection recurrence is common. 

Synonym Discrete subvalvar aortic stenosis

Reference http://ejcts.oxfordjournals.org/content/14/3/296.full

Eur J Echocardiogr (2008) 9 (1): 63-64.

doi: 10.1016/j.euje.2006.08.014

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