Obesity Surgery

, Volume 19, Issue 10, pp 1384–1392 | Cite as

Different Criteria for Assessment of Roux-en-Y Gastric Bypass Success: Does Only Weight Matter?

  • Maria de Fátima Haueisen Sander DinizEmail author
  • Valéria Maria de Azeredo Passos
  • Sandhi Maria Barreto
  • Daniela Barreto Linares
  • Soraya Rodrigues de Almeida
  • Alexandre Lages Savassi Rocha
  • Marco Túlio Costa Diniz
Research Article



Medium and long-term efficacy of Roux-en-Y gastric bypass (RYGBP) has previously been demonstrated. However, weight-loss success criteria could be influenced by super-obesity prevalence at baseline. Here, we describe a 5-year follow-up concerning weight loss results, comorbidities, and mortality of a RYGBP Brazilian population with a high prevalence (60.6%) of super-obesity.


One hundred ninety-three patients (142 female, 51 male) submitted to RYGBP were studied. Preoperative and follow-up body mass index (BMI), percent excess weight loss (%EWL), percent BMI loss (%EBL), and comorbidities were analyzed. Analysis of success was based on %EWL, Reinhold modified by Christou, and Biron criteria.


Five-year follow-up rates were 91.9%, 82.0%, 71.1%, 71.2%, 72.5%, respectively. By 2 years of follow-up, the rates of success based on %EWL, Reinhold modified by Christou, and Biron criteria were 90.4%, 63.4%, and 87.0%, respectively. By 5 years, these rates were 78.0%, 50.0%, and 74.0%, respectively. There was significant and persistent reduction of hypertension, diabetes mellitus, and dyslipidemia. Super-obesity was associated with the worst weight-loss results by modified Reinhold criteria, despite a significant reduction of comorbidities.


In the super-obese population, RYGBP was very efficient, contributing to significant weight loss and reduction in comorbidities. Mortality was more frequent than international rates, but this was most likely due to the severity of the cohort baseline. Success rates were different according to each criterion, but reaching BMI < 35 kg/m2 was not necessary for improvement in comorbidities.


Morbid obesity Bariatric surgery Gastric bypass Success criteria Comorbidities 


Conflict of interest statement

Federal University of Minas Gerais


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Copyright information

© Springer Science + Business Media, LLC 2008

Authors and Affiliations

  • Maria de Fátima Haueisen Sander Diniz
    • 1
    • 2
    • 8
    Email author
  • Valéria Maria de Azeredo Passos
    • 1
    • 4
  • Sandhi Maria Barreto
    • 3
    • 4
  • Daniela Barreto Linares
    • 7
  • Soraya Rodrigues de Almeida
    • 5
    • 6
  • Alexandre Lages Savassi Rocha
    • 6
  • Marco Túlio Costa Diniz
    • 5
    • 6
  1. 1.Departamento de Clínica Médica, Faculdade de Medicina e Hospital das ClínicasUniversidade Federal de Minas GeraisBelo HorizonteBrazil
  2. 2.Serviço de Endocrinologia e Metabologia, Faculdade de Medicina e Hospital das ClínicasUniversidade Federal de Minas GeraisBelo HorizonteBrazil
  3. 3.Departamento de Medicina Social e Preventiva, Faculdade de Medicina e Hospital das ClínicasUniversidade Federal de Minas GeraisBelo HorizonteBrazil
  4. 4.CNPq, Conselho Nacional de Desenvolvimento Científico e Tecnológico e membro do Centro Colaborador de Doenças Crônicas do Ministério da Saúde do Brasil, Faculdade de Medicina e Hospital das ClínicasUniversidade Federal de Minas GeraisBelo HorizonteBrazil
  5. 5.Departamento de Cirurgia, Faculdade de Medicina e Hospital das ClínicasUniversidade Federal de Minas GeraisBelo HorizonteBrazil
  6. 6.Instituto Alfa de Gastroenterologia, Faculdade de Medicina e Hospital das ClínicasUniversidade Federal de Minas GeraisBelo HorizonteBrazil
  7. 7.Departamento de Medicina, Faculdade de Medicina e Hospital das ClínicasUniversidade Federal de Minas GeraisBelo HorizonteBrazil
  8. 8.Minas GeraisBrazil

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