title: Evaluation of risk factors in superobese patients submitted to conventional Fobi-Capella surgery.
abstract: BACKGROUND
  Obesity is one of the worlds greatest health problems. The Roux-en-Y gastric bypass is the gold standard treatment for severe obesity. Surgery in obese patients has an acceptable level of morbidity and mortality. The superobese patient, a subcategory of severe obese patients with a high surgical risk has not yet been analyzed as a group.
  
  
  METHODS
  A retrospective and prospective cohort study was conducted enrolling 135 patients submitted to Roux-en-Y gastric bypass for treatment of severe obesity at the " Hospital das Clínicas" , Federal University of Pernambuco, Recife, PE, Brazil, between November 1997 and September 2003. The independent variables were possible risk factors of adverse outcomes: age, gender, weight, body mass index, diabetes, hypertension, hypercholesterolemia, sleep apnea, cardiopathy/coronariopathy, pneumopathy or any other co-morbidity. The dependent variables were major complications, minor complications and death.
  
  
  RESULTS
  Diabetes (RR = 1.6 and CI = 1.02-2.40) and sleep apnea (RR = 1.8 and CI = 1.18-2.64) were associated to minor complications. Cardiopathy/coronariopathy were associated with major complications (RR = 5.42 and CI = 1.22-2.40) and death (RR = 16.25 and CI = 3.00-87.95). BMI >or=55 kg/m2 was associated with minor complications (RR = 1.58 and CI = 1.04-2.40), major complications (RR = 3.17 and CI = 1.03-9.80) and death (P = 0.007). After logistic regression, the body mass index >55 kg/m2 remained as a strong risk factor of death (OR = 3.6 and CI = 1.05-12.32).
  
  
  CONCLUSIONS
  The body mass index >or=55 kg/m2 was the main risk factor for severe complications and death. Other risk factors affecting the outcome were diabetes, obstructive sleep apnea and cardiopathy/coronariopathy.
authors.affiliation: Division of Bariatric Surgery, Department of General Surgery, Federal University of Pernambuco, Brazil. euclides_martins@yahoo.com.br
authors.forename: Euclides Dias
authors.initials: ED
authors.lastname: Martins-Filho
authors.forename: José Bezerra
authors.initials: JB
authors.lastname: Câmara-Neto
authors.forename: Alvaro Antônio Bandeira
authors.initials: AA
authors.lastname: Ferraz
authors.forename: Melânia
authors.initials: M
authors.lastname: Amorim
authors.forename: Edmundo Machado
authors.initials: EM
authors.lastname: Ferraz
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D005260:Female; D015390:Gastric Bypass / Q000009:adverse effects; D006801:Humans; D008297:Male; D008875:Middle Aged; D009767:Obesity, Morbid / Q000401:mortality / Q000601:surgery*; D011183:Postoperative Complications; D011446:Prospective Studies; D012189:Retrospective Studies; D012307:Risk Factors; D012720:Severity of Illness Index; D055815:Young Adult