title: Predictors for weight loss failure following Roux-en-Y gastric bypass.
abstract: BACKGROUND
  Weight loss failure is a widely recognized occurrence following Roux-en-Y gastric bypass.
  
  
  OBJECTIVE
  This study aims to identify predictors associated with weight loss failure.
  
  
  METHODS
  It is a retrospective cohort which enrolled 187 subjects who underwent RYGB. Comparisons were made between patients' features at baseline and 24 months after surgery.
  
  
  RESULTS
  A weight loss failure rate of 11.2% was found. Advanced age and diabetes were statistically associated with failure.
  
  
  CONCLUSIONS
  The results found were close to previous reports. As weight loss failure represents an important concern, there is the possibility to perform revisional surgeries, which may emphasize the restrictive or malabsorptive characteristics of RYGB, leading to varied results. It is reinforced that weight loss cannot be used as the unique outcome to evaluate the success of surgery.
authors.affiliation: Departamento de Cirurgia, Faculdade de Ciências Médicas, Universidade de Campinas - UNICAMP, Campinas, SP, Brasil.
authors.forename: Everton
authors.initials: E
authors.lastname: Cazzo
authors.affiliation: Departamento de Cirurgia, Faculdade de Ciências Médicas, Universidade de Campinas - UNICAMP, Campinas, SP, Brasil.
authors.forename: Flávio Pinto
authors.initials: FP
authors.lastname: da Silva
authors.affiliation: Departamento de Cirurgia, Faculdade de Ciências Médicas, Universidade de Campinas - UNICAMP, Campinas, SP, Brasil.
authors.forename: José Carlos
authors.initials: JC
authors.lastname: Pareja
authors.affiliation: Departamento de Cirurgia, Faculdade de Ciências Médicas, Universidade de Campinas - UNICAMP, Campinas, SP, Brasil.
authors.forename: Elinton Adami
authors.initials: EA
authors.lastname: Chaim
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D015331:Cohort Studies; D005260:Female; D015390:Gastric Bypass / Q000009:adverse effects*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009767:Obesity, Morbid / Q000601:surgery*; D012189:Retrospective Studies; D012307:Risk Factors; D017211:Treatment Failure; D055815:Young Adult