title: Weight loss outcome after silastic ring Roux-en-Y gastric bypass: 8 years of follow-up.
abstract: BACKGROUND
  An underlying major aim of bariatric surgery is weight loss and its long-term maintenance. In spite of this, most studies regarding weight loss after surgical treatment of morbid obesity show 3-year follow-up results. We evaluated the effectiveness of silastic ring Roux-en-Y gastric bypass (SR-RYGBP) in promoting significant weight loss after an 8-year follow-up at the Londrina State University Hospital.
  
  
  METHODS
  From May 1999 to December 2000, 211 morbidly obese patients were submitted to SR-RYGBP by the same surgical team. The study's design was longitudinal, prospective, and descriptive. The analysis of postoperative weight decrease was based on excess weight loss in percentage (%EWL) and the calculation of body mass index. Therapeutic failure was considered when patients lost <50% of excess weight.
  
  
  RESULTS
  Patients lost to follow-up were 36.5%; therefore, 134 patients were included in this study. The average global EWL was 67.6 ± 14.9% on the first postoperative year, 72.6 ± 14.9% on the second year, 69.7 ± 15.1% on the fifth postoperative year, and 66.8 ± 7.6% on the eight postoperative year. Surgical treatment failure occurred in 15 patients (7.1%) over 8 years.
  
  
  CONCLUSIONS
  SR-RYGBP was effective in promoting and maintaining weight loss in the long term with a low failure rate.
authors.affiliation: Department of Surgery, State University of Londrina, Londrina, Brazil. valezi@sercomtel.com.br
authors.forename: Antonio Carlos
authors.initials: AC
authors.lastname: Valezi
authors.forename: Jorge
authors.initials: J
authors.lastname: Mali Junior
authors.forename: Mariano Almeida
authors.initials: MA
authors.lastname: de Menezes
authors.forename: Edivaldo Macedo
authors.initials: EM
authors.lastname: de Brito
authors.forename: Shirley A F
authors.initials: SA
authors.lastname: de Souza
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D005260:Female; D005500:Follow-Up Studies; D015390:Gastric Bypass / Q000379:methods*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009767:Obesity, Morbid / Q000601:surgery*; D011446:Prospective Studies; D019736:Prostheses and Implants; D016896:Treatment Outcome; D015431:Weight Loss; D055815:Young Adult
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