title: Antidiabetic efficacy of obesity surgery in Germany: a quality assurance nationwide survey.
abstract: BACKGROUND
  Obesity and diabetes usually co-exist. Obesity surgery seems to offer solutions for both. The objective of this study was to show the effect of obesity surgery on the diabetic profile.
  
  
  METHODS
  Data on obesity surgery in Germany (2005-2011) were collected from the Institute of Quality Assurance at the research university. Follow-up of the diabetic profile at 1, 2, and up to 6 years after surgery was done.
  
  
  RESULTS
  Among 17,670 patients, 5,506 (31.2%) were diabetics. Follow-up was accomplished in 87.4%, 82.5%, and 68.9% of eligible patients at 1, 2, and up to 6 years, respectively, after surgery. Of the study participants, 38.2% were insulin-treated (IT) patients and 61.8% were noninsulin-treated patients (NIT). Of the patients' procedures, 2878 (52.3%) Roux-en-Y gastric bypasses (RYGB), 1711 (31.1%) sleeve gastrectomies (SG), 679 (12.3%) laparoscopic adjustable gastric bands (LAGB), 165 (3%) biliopancreatic diversions with duodenal switch (BPD/DS), and 68 (1.3%) biliopancreatic diversions (BPD) were performed. Female gender percentage and mean body mass index (BMI) were significantly higher in the RYGB and LAGB groups. Mean age was significantly higher in BPD/DS group. At 1 year, remission/improvement (RI) percentage was 83.5%, 82.5%, 67.8%, 93.4%, and 84.8% after RYGB, SG, LAGB, BPD, and BPD/DS, respectively. At 2 years, RI% was 84.9%, 79.5%, 67.7%, 94.5%, and 90.9% after RYGB, SG, LAGB, BPD, and BPD/DS, respectively. At late follow-up, RI% was 83.2%, 59.5%, 58.9%, 100%, and 86.4% after RYGB, SG, LAGB, BPD, and BPD/DS, respectively. IT patients showed insignificantly higher RI% than NIT patients at all follow-up points. Malabsorptive procedures (RYGB, BPD, and BPD/DS) showed a significantly higher RI% than restrictive procedures (LAGB and SG) at late follow-up.
  
  
  CONCLUSIONS
  Obesity surgery has promising antidiabetic efficacy, especially in IT patients. Malabsorptive procedures show higher, gradually descending, but durable antidiabetic efficacy.
authors.affiliation: Surgery Department, Sachsenhausen Hospital, Frankfurt am Main, Germany. Electronic address: rweiner@khs-ffm.de.
authors.forename: Rudolf
authors.initials: R
authors.lastname: Weiner
authors.affiliation: Surgery Department, Sachsenhausen Hospital, Frankfurt am Main, Germany.
authors.forename: Islam
authors.initials: I
authors.lastname: El-Sayes
authors.affiliation: Department of General, Abdominal and Pediatric Surgery, Municipal Hospital, Gera, Germany; Institute of Quality Assurance in Surgery gGmbH, University Magdeburg, Magdeburg, Germany.
authors.forename: Thomas
authors.initials: T
authors.lastname: Manger
authors.affiliation: Surgery Department, Sachsenhausen Hospital, Frankfurt am Main, Germany.
authors.forename: Sylvia
authors.initials: S
authors.lastname: Weiner
authors.affiliation: Department of General, Abdominal and Vascular Surgery, Otto-von-Guericke University, Magdeburg, Germany.
authors.forename: Hans
authors.initials: H
authors.lastname: Lippert
authors.affiliation: Department of General, Abdominal and Pediatric Surgery, Municipal Hospital, Gera, Germany; Institute of Quality Assurance in Surgery gGmbH, University Magdeburg, Magdeburg, Germany.
authors.forename: Christine
authors.initials: C
authors.lastname: Stroh
mesh_terms: D000328:Adult; D050110:Bariatric Surgery; D003920:Diabetes Mellitus / Q000453:epidemiology*; D018450:Disease Progression; D005260:Female; D005858:Germany / Q000453:epidemiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D009017:Morbidity / Q000639:trends; D009765:Obesity / Q000150:complications / Q000453:epidemiology / Q000601:surgery*; D011785:Quality Assurance, Health Care / Q000706:statistics & numerical data*; D012074:Remission Induction
keywords: Antidiabetic efficacy; Diabetes remission; Meta-analytic studies; Obesity surgery