title: Usefulness of MRI in the follow-up of patients with repaired aortic coarctation and bicuspid aortic valve.
abstract: BACKGROUND
  The long-term outcome of repaired aortic coarctation may be complicated by dilatation of the ascending aorta notably in patients with bicuspid aortic valve. Magnetic resonance imaging was used to compare the size of the ascending aorta in patients with bicuspid or tricuspid aortic valve.
  
  
  METHODS
  In 50 patients with a repair of aortic coarctation, the size of the ascending aorta was measured in a bicuspid aortic valve group (n=11) and a tricuspid aortic valve group (n=39). The aortic diameter was measured at the level of the sinus of Valsalva and at the widest part of the ascending aorta using magnetic resonance imaging.
  
  
  RESULTS
  The mean age of patients at surgical repair was respectively 2.2+/-3.3 years for the bicuspid aortic valve group and 2.5+/-3.5 years for the tricuspid aortic valve group (p=NS) and the mean age at the time of the magnetic resonance imaging was 10.2+/-4.7 years and 9.3+/-5.9 years (p=NS) respectively. A significant difference in the aortic diameter was found between the bicuspid aortic valve group and the tricuspid aortic group both at the level of sinus of Valsalva (34.8+/-8.2 mm, 19.5+/-4.4 mm, respectively, p<0.01) and at the level of the ascending aorta (36.8+/-7.2 mm, 16.9+/-3.4 mm, respectively, p<0.01).
  
  
  CONCLUSIONS
  The occurrence of ascending aortic dilatation is significantly associated with the presence of a bicuspid aortic valve. This requires long-term follow-up, which can be effectively performed by magnetic resonance imaging.
authors.affiliation: Unité de Cardiologie Pédiatrique, Hôpital d'enfants et Centre de Cardiologie Clinique et Interventionnelle, Hôpital du Bocage, Dijon, France.
authors.forename: Jean-Pierre
authors.initials: JP
authors.lastname: Quenot
authors.forename: Christophe
authors.initials: C
authors.lastname: Boichot
authors.forename: Annie
authors.initials: A
authors.lastname: Petit
authors.forename: Sylvie
authors.initials: S
authors.lastname: Falcon-Eicher
authors.forename: Philippe
authors.initials: P
authors.lastname: d'Athis
authors.forename: Caroline
authors.initials: C
authors.lastname: Bonnet
authors.forename: Jean-Eric
authors.initials: JE
authors.lastname: Wolf
authors.forename: Pierre
authors.initials: P
authors.lastname: Louis
authors.forename: François
authors.initials: F
authors.lastname: Brunotte
mesh_terms: D001011:Aorta / Q000473:pathology*; D001017:Aortic Coarctation / Q000601:surgery*; D001021:Aortic Valve / Q000002:abnormalities* / Q000601:surgery; D002675:Child, Preschool; D003266:Continuity of Patient Care; D004108:Dilatation, Pathologic; D005260:Female; D006801:Humans; D007223:Infant; D008279:Magnetic Resonance Imaging; D008297:Male; D011184:Postoperative Period