title: A randomized clinical trial of the effect of intraoperative saline perfusion on postvasectomy azoospermia.
abstract: BACKGROUND
  We wanted to determine whether a saline flush during vasectomy would reduce the time needed to reach azoospermia.
  
  
  METHODS
  During vasectomy men were randomly assigned to flush the prostatic end of the vas deferens with 10 mL of normal saline (intervention group, n = 50), while the remaining men (n = 56) served as controls. Sperm counts were performed on the immediate postprocedure urine specimen and on semen samples at 1, 6, and 12 weeks after vasectomy.
  
  
  RESULTS
  The postprocedure urine specimens from the intervention and control groups contained 29.2 x 106 and 0.004 x 106 sperm, respectively (P < .001). Total sperm counts in the ejaculate for intervention and control groups at 1, 6, and 12 weeks were (in millions of sperm): 14.1 and 13.8, 0.4 and 8.0, and 0.0 and 0.011, respectively (P > .05 at all time points). There was no difference in the rate at which the men in the 2 groups achieved azoospermia.
  
  
  CONCLUSIONS
  Vasal perfusion with saline during vasectomy was effective in removing sperm from the distal vas; however, perfusion did not increase the rate at which men achieve azoospermia.
authors.affiliation: Department of Urology, University of Michigan, Arbor, Mich. 48109-0330, USA.
authors.forename: Brian
authors.initials: B
authors.lastname: Eisner
authors.forename: Timothy
authors.initials: T
authors.lastname: Schuster
authors.forename: Phillip
authors.initials: P
authors.lastname: Rodgers
authors.forename: Muzammil
authors.initials: M
authors.lastname: Ahmed
authors.forename: Gary
authors.initials: G
authors.lastname: Faerber
authors.forename: Gary
authors.initials: G
authors.lastname: Smith
authors.forename: Dana
authors.initials: D
authors.lastname: Ohl
mesh_terms: D000328:Adult; D006801:Humans; D007430:Intraoperative Care; D008297:Male; D008875:Middle Aged; D009845:Oligospermia / Q000473:pathology*; D011184:Postoperative Period; D012661:Semen / Q000166:cytology; D012965:Sodium Chloride; D013076:Sperm Count / Q000379:methods*; D007507:Therapeutic Irrigation; D013997:Time Factors; D016896:Treatment Outcome; D014556:Urine / Q000166:cytology; D014649:Vas Deferens / Q000601:surgery*; D014659:Vasectomy / Q000379:methods*
chemical_list: D012965:Sodium Chloride