[Apico-aortic conduit for surgical treatment of supravalvular aortic stenosis with hypoplastic ascending aorta (author's transl)].

Surgical treatment of two patients with diffuse supravalvular aortic stenosis including hypoplastic aortic valve ring was undertaken. In both patients a left ventricular apical-thoracic aorta conduit containing a bioprosthesis was used. Intra- and postoperative pressure measurements demonstrated relief of the systolic pressure gradients present preoperatively between left ventricle and ascending aorta distal to the stenosis. Both patients are asymptomatic at four and eleven months after surgery, respectively.