title: [Impacts of kidney transplantation on erectile function and its contributing factors evaluation].
abstract: OBJECTIVE
  To study the impacts of kidney transplantation on erectile function and analyse its contributing factors.
  
  
  METHODS
  In order to evaluate the severity of erectile dysfunction (ED), a total of 250 married male kidney transplant recipients (KTR) with functioning graft were assessed with the International Index of Erectile Function (IIEF) questionnaire. Data of clinical characteristics, medical and sexual history and laboratory examination were collected. Univariate and multivariate logistic regression analyses were carried out to determine which have independent impacts on erectile function.
  
  
  RESULTS
  The investigation was accomplished in 84.8% of the KTRs. There was no significant difference in ED incidence before and after renal transplantation (53.8% vs. 44.3%, P > 0.05). According to the IIEF score, erectile function improved in 43.9% of the KTRs, remained unchanged in 42.9%, and deteriorated in 13.2%, as compared with pre-transplantation. Logistic regression analysis showed that significant and independent influencing factors in erectile function were age, hemoglobin level, presence of DM and/or peripheral neuropathy and iterative transplantations, and their relative risks were 3.01, 2.01, 3.15, 3.89 and 2.67, respectively.
  
  
  CONCLUSIONS
  ED is highly prevalent among KTRs and its pathogenesis is multifactorial. Age, presence of DM and/or peripheral neuropathy, hemoglobin level and iterative transplantations were chief contributing factors in erectile function.
authors.affiliation: Center of Renal Transplantation, the First Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, China. drtxh@126.com
authors.forename: Xiao-hui
authors.initials: XH
authors.lastname: Tian
authors.forename: Wu-jun
authors.initials: WJ
authors.lastname: Xue
authors.forename: Da-qing
authors.initials: DQ
authors.lastname: Li
authors.forename: Pu-xun
authors.initials: PX
authors.lastname: Tian
authors.forename: Xiao-ming
authors.initials: XM
authors.lastname: Ding
authors.forename: Xiao-ming
authors.initials: XM
authors.lastname: Pan
authors.forename: Jun
authors.initials: J
authors.lastname: Hou
mesh_terms: D000328:Adult; D048909:Diabetes Complications; D007172:Erectile Dysfunction / Q000453:epidemiology*; D006801:Humans; D016030:Kidney Transplantation / Q000009:adverse effects*; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D012307:Risk Factors; D011795:Surveys and Questionnaires