title: [Nutritional status after surgical treatment of obesity].
abstract: BACKGROUND
  Biliopancreatic bypass with duodenal switch is a treatment for morbid obesity that combines restriction of dietary intake with a high degree of malabsorption. The operation involves the risk of losing important nutritional elements.
  
  
  METHODS
  64 women and 14 men who had a biliopancreatic bypass with duodenal switch performed in 2002 - 2005 and were followed up at least once, six months or later after surgery, were examined with 3 to 6-month intervals for the following; body weight, clinical status, haematological variables, ferritin, folate, albumin, creatinine, retinol, alpha-tocopherol/lipids, vitamin D metabolites, parathyroid hormone, vitamin B1, lipids, glucose and other clinical chemical variables.
  
  
  RESULTS
  Weight loss after surgery was substantial and rapid, from a mean of 153.8 kg (SD 30.2) to 92.7 kg (SD 21.6) after one year (n = 74). Low values of serum albumin, creatinine, retinol, 25-OH vitamin D and elevated parathyroid hormone were very common. Four women and three men (9 % of all) with common channels of < 100 cm, required a surgical revision mainly due to hypoalbuminemia. Two women became pregnant before the recommended 18 months after surgery.
  
  
  CONCLUSIONS
  Biliopancreatic bypass with duodenal switch in patients with common channels < 100 cm, has a high rate of complications and nutritional deficiencies. This surgery should be used restrictively.
authors.affiliation: Avdeling for preventiv kardiologi, Ullevål universitetssykehus, 0407 Oslo. serena.tonstad@uus.no
authors.forename: Serena
authors.initials: S
authors.lastname: Tonstad
authors.forename: Tine
authors.initials: T
authors.lastname: Sundfør
authors.forename: Eli Anne
authors.initials: EA
authors.lastname: Myrvoll
mesh_terms: D000328:Adult; D015904:Biliopancreatic Diversion / Q000009:adverse effects* / Q000379:methods; D019587:Dietary Supplements; D004386:Duodenum / Q000601:surgery*; D005260:Female; D006801:Humans; D008286:Malabsorption Syndromes / Q000097:blood / Q000178:diet therapy / Q000209:etiology; D008297:Male; D044342:Malnutrition / Q000097:blood / Q000178:diet therapy / Q000209:etiology; D008875:Middle Aged; D008903:Minerals / Q000008:administration & dosage; D009752:Nutritional Status; D009767:Obesity, Morbid / Q000601:surgery*; D011183:Postoperative Complications / Q000097:blood / Q000178:diet therapy; D011247:Pregnancy; D012307:Risk Factors; D014815:Vitamins / Q000008:administration & dosage
chemical_list: D008903:Minerals; D014815:Vitamins