Septoplasty for left ventricular outflow obstruction without aortic valve replacement: a new technique.

Abstract A new technique is described for relief of diffuse obstruction in the left ventricular outflow tract without aortic valve replacement. Left ventricular septoplasty was performed, preserving the aortic valve. The supravalve stenosis was repaired using a Y-shaped extension of the aortotomy proximally and a pantaloon-shaped patch of woven Dacron fabric. A 10-year-old girl with “tunnel” or diffuse stenosis obtained striking relief of left ventricular hypertension by this technique.