title: Comparison of modified one- and two-layer microsurgical vasovasostomy.
abstract: OBJECTIVE
  To compare the outcome of a modified one-layer and two-layer vasovasotomy (VV) in two groups of similar men undergoing vasectomy reversal.
  
  
  METHODS
  The charts and surgical records of all surgical procedures performed on men undergoing a modified one- or two-layer VV between June 1992 and July 1994 were retrospectively reviewed. A successful outcome (patency) was defined as sperm present at follow-up (mean follow-up 8 weeks). A modified one-layer VV was used in 17 men (group 1) and a two-layer VV in 23 (group 2).
  
  
  RESULTS
  Sperm were present in both groups if surgery was undertaken after vasal obstruction lasting < 36 months. The modified one- and two-layer VV had equal patency (88% and 90%, respectively) when undertaken after an obstructed interval of 36-96 months; outcomes were poorer if surgery was performed after > 96 months. The mean operative duration was 96 min for a modified one-layer VV and 167 min for the two-layer VV.
  
  
  CONCLUSIONS
  The simpler and faster modified one-layer VV provides sufficient accuracy for successful vasectomy reversal in most cases. For most patients, both procedures have equivalent patency.
authors.affiliation: Department of Urology, Dalhousie University, Queen Elizabeth II Health Sciences Center, Halifax NS, Canada.
authors.forename: M A
authors.initials: MA
authors.lastname: Fischer
authors.forename: J E
authors.initials: JE
authors.lastname: Grantmyre
mesh_terms: D000328:Adult; D006801:Humans; D007248:Infertility, Male / Q000601:surgery*; D008297:Male; D008866:Microsurgery / Q000379:methods*; D012189:Retrospective Studies; D013076:Sperm Count; D013997:Time Factors; D016896:Treatment Outcome; D014669:Vasovasostomy / Q000379:methods*