title: Aortic complications after bicuspid aortic valve replacement: long-term results.
abstract: BACKGROUND
  Bicuspid aortic valve (BAV) is a risk factor for aortic dissection and aneurysm. We studied patients with BAV and tricuspid aortic valve (TAV) to evaluate long-term changes in the ascending aorta after aortic valve replacement (AVR).
  
  
  METHODS
  One hundred consecutive patients were allocated into two groups according to the presence of BAV (group A, 50 patients) or TAV (group B, 50 patients). Mean age was 51 +/- 12 years in group A, and 50 +/- years 12 in group B. No patients had hypertension or Marfan's syndrome. Until July 2001, mean follow-up was 234 +/- 47 months in group A and 241 +/- 43 months in group B.
  
  
  RESULTS
  Five patients (10%, CL 5.7 to 13.9) in group A suffered late acute aortic dissection. Acute aortic dissection (5 vs 0, p = 0.0001) and sudden death (7 vs 0, p = 0.0001) occurred more frequently in patients with BAV. All survivors were assessed by echocardiogram. The mean diameter of the ascending aorta was 48.4 mm in group A and 36.8 mm in group B. Three patients in group A were operated on because of ascending aorta aneurysm more than 6 cm in diameter.
  
  
  CONCLUSIONS
  As a result of our experience, we recommend a policy of prophylactic replacement of even a seemingly normal and definitely a mildly enlarged ascending aorta in cases of BAV at the moment of AVR, and consideration of a similar approach for any other cardiac surgical procedure in patients with BAV.
authors.affiliation: Division of Cardiovascular Surgery, Niguarda Hospital, Milan, Italy. f.russo@tiscali.it
authors.forename: Claudio F
authors.initials: CF
authors.lastname: Russo
authors.forename: Simone
authors.initials: S
authors.lastname: Mazzetti
authors.forename: Andrea
authors.initials: A
authors.lastname: Garatti
authors.forename: Elena
authors.initials: E
authors.lastname: Ribera
authors.forename: Angela
authors.initials: A
authors.lastname: Milazzo
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Bruschi
authors.forename: Marco
authors.initials: M
authors.lastname: Lanfranconi
authors.forename: Tiziano
authors.initials: T
authors.lastname: Colombo
authors.forename: Ettore
authors.initials: E
authors.lastname: Vitali
mesh_terms: D000208:Acute Disease; D000784:Aortic Dissection / Q000209:etiology* / Q000401:mortality / Q000601:surgery; D017545:Aortic Aneurysm, Thoracic / Q000209:etiology* / Q000401:mortality / Q000601:surgery; D001021:Aortic Valve / Q000002:abnormalities* / Q000601:surgery; D016757:Death, Sudden, Cardiac / Q000209:etiology; D005260:Female; D005500:Follow-Up Studies; D019918:Heart Valve Prosthesis Implantation; D006801:Humans; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000209:etiology* / Q000401:mortality / Q000601:surgery; D012086:Reoperation; D018570:Risk Assessment; D012307:Risk Factors; D015996:Survival Rate