title: [IIEF-5 cannot be used as a tool for differential diagnosis of vasculogenic erectile dysfunction].
abstract: OBJECTIVE
  To evaluate the 5-item version of the international index of erectile function (IIEF-5) as a method to differentiate the causes of vasculogenic erectile dysfunction (ED).
  
  
  METHODS
  In all, 103 ED patients (mean age 46.8 +/- 18.7) were reviewed by IIEF-5. Penile blood flow was also assessed in each patient after an intracavernosal injection (ICI) and audio-visual sex stimulation by duplex Doppler ultrasonography. The 99mTc-(113m)In dual radioisotope test was performed to confirm specific vascular causes in the vasculogenic ED cases. Kruskal-Wallis TEST was employed to compare the scores of IIEF-5 with the results of ICI, duplex Doppler ultrasonography and the 99mTC-(113m)In dual radioisotope test.
  
  
  RESULTS
  Of the total number of ED cases, 37 (37/103, 35.9%) were nonvasculogenic, 18 (18/103, 17.5%) arteriogenic, 35 (35/103, 34.0%) venogenic and 13 (13/103, 12.6%) combined vasculogenic. There was no significant difference in the IIEF-5 scores either between the vasculogenic group and the non-vasculogenic one (P = 0.253) or among different groups of the vasculogenic ED patients.
  
  
  CONCLUSIONS
  IIEF-5 cannot be used as a tool for differential diagnosis of vasculogenic ED, or to compare its specific vascular causes, nor can the scores of IIEF-5 reflect penile vascular conditions.
authors.affiliation: Department of Urology, Renji Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai Institute of Andrology, Shanghai 200001, China. binchen@263.sina.com
authors.forename: Bin
authors.initials: B
authors.lastname: Chen
authors.forename: Yong-ning
authors.initials: YN
authors.lastname: Lu
authors.forename: Yin-fa
authors.initials: YF
authors.lastname: Han
authors.forename: Xu-yuan
authors.initials: XY
authors.lastname: Huang
authors.forename: Kai
authors.initials: K
authors.lastname: Hu
authors.forename: Yi-xin
authors.initials: YX
authors.lastname: Wang
authors.forename: Yi-ran
authors.initials: YR
authors.lastname: Huang
mesh_terms: D000328:Adult; D006801:Humans; D018783:Impotence, Vasculogenic / Q000175:diagnosis* / Q000000981:diagnostic imaging; D008297:Male; D008875:Middle Aged; D010413:Penis / Q000000981:diagnostic imaging; D012907:Smoking; D011795:Surveys and Questionnaires; D014463:Ultrasonography