title: [Surgical treatment of supravalvular aortic stenosis].
abstract: OBJECTIVE
  Surgical correction for 10 supravalvular aortic stenosis since 1988.
  
  
  METHODS
  Diagnosis was carried out by means of echocardiography and magnetic resonance. Seven patients showed features of Williams-Beuren syndrome, 5 patients showed in their genotype a delection of 7-chromosome. 5 showed membranous-localized type obstruction and the other 5 with hourglass type. The patients in the first group underwent circumferential resection of the stenosis ring followed by a diamond- shaped patch and the second group were treated with resection of the stenosing ring associated with an inverted Y- shaped patch with releasing of the coronary ostia in two of them.
  
  
  RESULTS
  There was no hospital death. The gradient was substantially reduced from 60 +/- 8 to 5 +/- 1 mm Hg (range 0-14). The average staying was under 7 +/- 1 days. The average follow-up was 58 +/- 8 months (2-120).
  
  
  CONCLUSIONS
  Postoperatively, all the patients were in NYHA class I-II. The residual gradient was less than 15 mmHg in the echocardiography study during the follow-up and none of them required an additional operation.
authors.affiliation: Servicios de Cirugía Cardíaca, Hospital Infantil Cruces, Baracaldo, Vizcaya.
authors.forename: G
authors.initials: G
authors.lastname: Aldamiz Echevarría
authors.forename: P
authors.initials: P
authors.lastname: Martínez Corrales
authors.forename: J
authors.initials: J
authors.lastname: Aramendi Gallardo
authors.forename: A
authors.initials: A
authors.lastname: Llorente Urcullu
authors.forename: D
authors.initials: D
authors.lastname: Rodrigo Carbonero
authors.forename: A
authors.initials: A
authors.lastname: Cabrera Duro
mesh_terms: D000293:Adolescent; D001024:Aortic Valve Stenosis / Q000601:surgery*; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008297:Male