title: Antegrade versus retrograde stenting in laparoscopic pyeloplasty.
abstract: OBJECTIVE
  To compare operative times between retrograde and antegrade ureteral stenting as part of laparoscopic pyeloplasty.
  
  
  METHODS
  Laparoscopic pyeloplasty procedures from January 2002 to January 2007 were identified through a prospective database. Procedures on 126 patients were performed using the same transperitoneal technique apart from the method of stent placement, which was performed in either a retrograde manner before laparoscopy or an antegrade manner during the laparoscopic portion of the procedure.
  
  
  RESULTS
  A total of 45 patients underwent antegrade stenting, 53 had retrograde stenting, 20 patients already had a stent in place, and 8 patients had retrograde pyelography followed by antegrade stenting. Operative time in patients with antegrade stent placement was significantly faster than in those with retrograde stent placement (median 185 v 245 min, P < 0.0001 [two-way analysis of variance]), even when the variability of the operative surgeon was taken into account. There was no difference in the complication rates.
  
  
  CONCLUSIONS
  Antegrade stent placement results in a significantly faster overall operative time when compared with retrograde stent placement.
authors.affiliation: Bristol Urological Institute, Southmead Hospital, Bristol, United Kingdom. nimarum@hotmail.com
authors.forename: Nimalan
authors.initials: N
authors.lastname: Arumainayagam
authors.forename: Andrea
authors.initials: A
authors.lastname: Minervini
authors.forename: Kim
authors.initials: K
authors.lastname: Davenport
authors.forename: Vivekanandan
authors.initials: V
authors.lastname: Kumar
authors.forename: Lorenzo
authors.initials: L
authors.lastname: Masieri
authors.forename: Sergio
authors.initials: S
authors.lastname: Serni
authors.forename: Marco
authors.initials: M
authors.lastname: Carini
authors.forename: Anthony G
authors.initials: AG
authors.lastname: Timoney
authors.forename: Francis X
authors.initials: FX
authors.lastname: Keeley
mesh_terms: D000328:Adult; D006801:Humans; D007682:Kidney Pelvis / Q000601:surgery*; D010535:Laparoscopy / Q000379:methods*; D015607:Stents; D013997:Time Factors; D014517:Ureteral Obstruction / Q000601:surgery*