title: [One-stage bilateral rigid ureteroscopy].
abstract: OBJECTIVE
  To evaluate the results of one-stage bilateral rigid ureteroscopy for the treatment of bilateral ureteric stones and to identify predictive factors of failure.
  
  
  METHODS
  From January 1995 to June 2006, 61 patients were hospitalised for bilateral ureteric stones. Fifty patients, that is, 100 renal units were treated by first-line one-stage bilateral rigid ureteroscopy using an 8 F rigid ureteroscope and a ballistic lithotriptor. A complete statistical analysis (bivariate analysis completed by multivariate analysis) was performed to identify predictive factors of intraoperative failure.
  
  
  RESULTS
  The overall success rate per patient (success on at least one side) was 92% (with bilateral success in 70% of cases). Statistical analysis revealed a statistically significant difference between the two failure/success groups for mean stone diameter (p < 0.1%), site (p = 0.6%) and degree of cavity dilatation (p = 4%). Similarly, a strong statistical correlation was observed between these variables and intraoperative failure. The intraoperative complication rate was 4% (two patients) and the postoperative complication rate was 16%, corresponding to minor complications in every case (low back pain, fever) not requiring a supplementary procedure.
  
  
  CONCLUSIONS
  One-stage bilateral rigid ureteroscopy achieved satisfactory results similar to those of unilateral ureteroscopy. Predictive factors of failure were: stone diameter (greater than 15 mm), stones in the lumbar ureter and marked cavity dilatation.
authors.affiliation: Service d'urologie, CHU Sahloul, 4054 Sousse, Tunisie.
authors.forename: W
authors.initials: W
authors.lastname: Hamida
authors.forename: A
authors.initials: A
authors.lastname: Hidoussi
authors.forename: M
authors.initials: M
authors.lastname: Jaidane
authors.forename: A
authors.initials: A
authors.lastname: Slama
authors.forename: A
authors.initials: A
authors.lastname: Youssef
authors.forename: N B
authors.initials: NB
authors.lastname: Sorba
authors.forename: A T F
authors.initials: AT
authors.lastname: Mosbah
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D002675:Child, Preschool; D004867:Equipment Design; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D017211:Treatment Failure; D014514:Ureteral Calculi / Q000628:therapy*; D020709:Ureteroscopes; D018666:Ureteroscopy / Q000379:methods*; D055815:Young Adult