title: To stent or not to stent perioperatively the ureteroileal anastomosis of ileal orthotopic bladder substitutes and ileal conduits? Results of a prospective randomized trial.
abstract: OBJECTIVE
  We evaluated the impact of stenting the ureteroileal anastomosis on its competence, upper urinary tract dilatation, gastrointestinal recovery, metabolic parameters and patency rate after cystectomy with ileal bladder substitution or ileal conduit.
  
  
  METHODS
  A total of 54 patients (37 with an ileal bladder substitute and 17 with an ileal conduit) were prospectively randomized into 2 groups, with (29) or without (25) perioperative stenting of the ureteroileal anastomosis. In all cases an end-to-side ureteroileal refluxing anastomosis was performed. The stents were removed after 5 to 10 days. The parameters assessed postoperative days 1, 3 and 7 were creatinine concentration from the wound drains, upper urinary tract dilatation, time to bowel function recovery, serum creatinine, as well as urea and incidence of metabolic acidosis.
  
  
  RESULTS
  Median patient age was 68 years (range 45 to 85). Urine leak on postoperative day 1 was more frequent in those anastomoses without stents, and on postoperative days 3 and 7 the values were comparable. Stenting of the ureteroileal anastomosis resulted in significantly decreased early postoperative upper urinary tract dilatation, improved recovery of bowel function and decreased metabolic acidosis. In either group no patient had clinical evidence of ureteroileal anastomotic stricture during the early postoperative period. Three patients with perioperative stenting required surgical or endoscopic treatment for a stricture of the ureteroileal anastomosis during the 12-month followup.
  
  
  CONCLUSIONS
  Stenting of the ureteroileal anastomosis allows for significantly less frequent incidence of early postoperative dilatation of the pelvicaliceal system, bowel activity resumes significantly earlier and metabolic acidosis is significantly less frequent.
authors: Department of Urology, University Hospital of Bern, Bern, Switzerland.
authors: Agostino
authors: A
authors: Mattei
authors: Frederic D
authors: FD
authors: Birkhaeuser
authors: Christian
authors: C
authors: Baermann
authors: Sebastian H
authors: SH
authors: Warncke
authors: Urs E
authors: UE
authors: Studer
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000714:Anastomosis, Surgical / Q000295:instrumentation*; D015653:Cystectomy; D005500:Follow-Up Studies; D006801:Humans; D007082:Ileum / Q000601:surgery*; D008875:Middle Aged; D011446:Prospective Studies; D015607:Stents; D016896:Treatment Outcome; D014513:Ureter / Q000601:surgery*; D001745:Urinary Bladder Diseases / Q000601:surgery*; D014547:Urinary Diversion