title: [Use of a polymeric gel to prevent retropulsion during intracorporeal lithotripsy].
abstract: BACKGROUND
  Stone retropulsion during ureteroscopic lithotripsy may lead to additional procedures needed for residual calculi. Several devices have been introduced in an attempt to reduce retropulsion. We set out to report our initial experience utilizing the new polymeric gel, BackStop.
  
  
  METHODS
  We prospectively collected data on 7 ureteroscopy procedures with distal ureteral calculi treated with BackStop. Perioperative data including stone size, location, operative time, stone free rate, the presence or absence of retropulsion was collected. Success was defined as no residual fragments, no retropulsion, and no additional procedures required.
  
  
  RESULTS
  All of the patients were rendered stone free after URS and no retropulsion occurred. There were no intraoperative complications nor gel migration or problems with dissolving the gel.
  
  
  CONCLUSIONS
  BackStop is a new promising therapy to prevent retropulsion during ureteral intracorporeal lithotripsy. It is safe, easy to apply and very effective in preventing stone fragment migration. BackStop has the potential to reduce operative time.
authors.affiliation: Division of Urology, Department of Surgery, Denver Health Medical Center, University of Colorado, School of Medicine, Denver, Colorado, USA. wilson.molina@dhha.org
authors.forename: W R
authors.initials: WR
authors.lastname: Molina
authors.forename: A
authors.initials: A
authors.lastname: Pompeo
authors.forename: D
authors.initials: D
authors.lastname: Sehrt
authors.forename: G
authors.initials: G
authors.lastname: Pohlmann
authors.forename: F J
authors.initials: FJ
authors.lastname: Kim
mesh_terms: D000328:Adult; D005260:Female; D005782:Gels / Q000627:therapeutic use*; D006801:Humans; D007431:Intraoperative Complications / Q000517:prevention & control*; D008096:Lithotripsy / Q000009:adverse effects* / Q000379:methods*; D008297:Male; D008875:Middle Aged; D011108:Polymers; D011446:Prospective Studies; D014514:Ureteral Calculi / Q000628:therapy*; D018666:Ureteroscopy
chemical_list: D005782:Gels; D011108:Polymers