[A surgical experience of aortoventriculoplasty (Konno's procedure) for aortic stenosis associated with hypoplasia of aortic valve ring progressed after the repair of supravalvular aortic stenosis].
A 14-year-old boy with aortic stenosis associated with hypoplasia of aortic valve ring underwent aortoventriculoplasty (Konno's procedure) successfully nine years after the repair of supravalvular aortic stenosis. His aortic annulus diameter before enlargement was 17 to 18 mm and after the procedure, a 25 mm St. Jude Medical prosthetic valve was implanted. It was adequate size for this large-sized student (173 cm in height, 67 kg in weight). After this operation, mild stenosis of right ventricular outflow tract was presented probably due to insufficient reconstruction of right ventricular outflow for such a dramatic enlargement of aortic annulus. Although this procedure makes possible to implant more than three-size larger prosthetic valve without major complications, we have to be careful about preventing right ventricular outflow tract stenosis in case of requiring enlargement over 40 or 50% of aortic annular circle.
Department of Cardiovascular Surgery, Seirei Hamamatsu General Hospital.
Y
Y
Hiramatsu
A
A
Sakai
S
S
Maki
Y
Y
Abe
T
T
Nomura
M
M
Osawa
D000293:Adolescent; D001021:Aortic Valve / Q000002:abnormalities / Q000601:surgery*; D001024:Aortic Valve Stenosis / Q000209:etiology / Q000601:surgery*; D006348:Cardiac Surgical Procedures / Q000379:methods; D006350:Heart Valve Prosthesis; D006352:Heart Ventricles / Q000601:surgery*; D006801:Humans; D008297:Male