title: Recipient and donor body mass index as important risk factors for delayed kidney graft function.
abstract: BACKGROUND
  Obesity is increasingly impacting the overall health status and the global costs for health care. The increase in body mass index (BMI) is also observed in kidney allograft recipients and deceased organ donors.
  
  
  METHODS
  In a retrospective single-center study, we analyzed 1132 deceased donor kidney grafts, transplanted at our institution between 2000 and 2009 for recipient and donor BMI and its correlation with delayed graft function (DGF). Recipients/donors were classified according to their BMI (<18.5, 18.5-24.9, 25-29.9, and >30 kg/m(2)). DGF was defined as requirement for one dialysis within the first week after transplantation.
  
  
  RESULTS
  Overall DGF rate was 32.4%, mean recipient BMI was 23.64 ± 3.75 kg/m(2), and mean donor BMI was 24.69 ± 3.44 kg/m(2). DGF rate was 25.2%, 29.8%, 40.9%, and 52.6% in recipients with BMI less than 18.5, 18.5 to 24.9, 25 to 29.9, and more than 30 kg/m, respectively (P<0.0001). Donor BMI less than 18.5, 18.5 to 24.9, 25 to 29.9, more than 30 kg/m(2) resulted in a DGF rate of 22.5%, 31.0%, 37.3%, and 51.2% (P < 0.0001). Multivariate analysis revealed recipient BMI and dialysis duration as independent risk factors for DGF. DGF results in inferior 1- and 5-year graft and patient survival.
  
  
  CONCLUSIONS
  Recipient and donor BMI correlate with the incidence of DGF. Awareness thereof should have an impact on peri- and posttransplant measures in renal transplant recipients.
authors.affiliation: Department of Visceral, Transplant and Thoracic Surgery, Center of Operative Medicine, Innsbruck Medical University, Innsbruck, Austria.
authors.forename: Annemarie
authors.initials: A
authors.lastname: Weissenbacher
authors.forename: Maximilian
authors.initials: M
authors.lastname: Jara
authors.forename: Hanno
authors.initials: H
authors.lastname: Ulmer
authors.forename: Matthias
authors.initials: M
authors.lastname: Biebl
authors.forename: Claudia
authors.initials: C
authors.lastname: Bösmüller
authors.forename: Stefan
authors.initials: S
authors.lastname: Schneeberger
authors.forename: Gert
authors.initials: G
authors.lastname: Mayer
authors.forename: Johann
authors.initials: J
authors.lastname: Pratschke
authors.forename: Robert
authors.initials: R
authors.lastname: Öllinger
mesh_terms: D000328:Adult; D001317:Austria; D015992:Body Mass Index; D016009:Chi-Square Distribution; D051799:Delayed Graft Function / Q000209:etiology* / Q000401:mortality / Q000628:therapy; D005260:Female; D006084:Graft Rejection / Q000209:etiology; D006085:Graft Survival; D006801:Humans; D016030:Kidney Transplantation / Q000009:adverse effects* / Q000401:mortality; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D009765:Obesity / Q000150:complications* / Q000401:mortality; D016017:Odds Ratio; D006435:Renal Dialysis; D012189:Retrospective Studies; D018570:Risk Assessment; D012307:Risk Factors; D015996:Survival Rate; D013997:Time Factors; D014019:Tissue Donors / Q000706:statistics & numerical data*; D016896:Treatment Outcome