title: One-layer vasovasostomy: microsurgical versus loupe-assisted.
abstract: OBJECTIVE
  To compare the outcomes of microsurgical versus loupe-assisted technique for vasectomy reversal.
  
  
  METHODS
  Retrospective comparative study with randomization.
  
  
  METHODS
  University hospital male infertility clinic.
  
  
  METHODS
  Fifty men with obstructive azoospermia after vasectomy.
  
  
  METHODS
  One-layer vasovasostomy with microscope (group I) or optical loupe (group II).
  
  
  METHODS
  Patency, pregnancy, operation time, postoperative stricture.
  
  
  RESULTS
  Mean operation time was 106.4±10.3 minutes in group I and 78.3±5.7 minutes in group II, showing a statistically significant difference. Analysis of semen sampled from men, who succeeded in getting vasal patency, was performed finally at the sixth month after surgery and showed sperm concentrations of 21.5 million/mL and 20.7 million/mL and sperm motilities of 32.5% and 30.8% in groups I and II, respectively, without a statistical significance. Patency rates were 96% (24 out of 25) in group I and 72% (18 out of 25) in group II, showing a statistically significant difference. Pregnancy rates were 40% (10 out of 25) in group I and 28% (7 out of 25) in group II. There was no statistically significant difference in pregnancy rate between the two groups. Postoperative vasal stricture occurred in four patients, all of them from group II. There was no operation-related complication, such as hematoma or wound infection.
  
  
  CONCLUSIONS
  Microscopic technique yielded a higher patency rate than loupe-assisted technique, possibly by reducing the chance of postoperative vasal stricture.
authors.affiliation: Department of Urology, College of Medicine, CHA University, Bundang CHA Hospital, Gyeonggi, South Korea.
authors.forename: Sang Hyun
authors.initials: SH
authors.lastname: Jee
authors.forename: Young Kwon
authors.initials: YK
authors.lastname: Hong
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D007909:Lenses; D008297:Male; D008866:Microsurgery / Q000009:adverse effects / Q000295:instrumentation / Q000379:methods*; D008875:Middle Aged; D008954:Models, Biological; D011183:Postoperative Complications / Q000453:epidemiology / Q000209:etiology; D011247:Pregnancy; D018873:Pregnancy Rate; D012189:Retrospective Studies; D013076:Sperm Count; D013081:Sperm Motility / Q000502:physiology; D014669:Vasovasostomy / Q000009:adverse effects / Q000295:instrumentation* / Q000379:methods*