title: [Efficacy and safety of bilateral RIRS for renal lithiasis.]
abstract: OBJECTIVE
  We present our experience in single-stage bilateral retrograde intrarenal surgery (RIRS), analyzing the stone free rate (SFR), surgical time, hospital stay, pre- and post procedure creatinine, stone composition and complications.
  
  
  METHODS
  Between April 2012 and February 2016, 24 RIRS were carried out in 12 patients with bilateral renal stones. Patients were 9 men and 3 women with a median age of 47.5 (range:55),IMC: 23.59 (range: 12.5).
  
  
  RESULTS
  Mean number of stones per renal unit was 2.7 (range: 12), mostly located in the renal pelvis (40%), with an average size of 16.08±8.06 mm and an average stone burden of 258.54±242.59 mm². The SFR at 3 months was 83.33%. Average operation time was 75 minutes and median hospital stay was 2 days. Three complications were recorded (25%), all of them minor (Clavien I-II). No major complications were recorded (Clavien III-V).
  
  
  CONCLUSIONS
  Single-stage bilateral RIRS is a safe and effective tool for the treatment of patients with bilateral renal stones.
authors.affiliation: Servicio de Urología. Hospital Universitari Son Espases. Palma de Mallorca. España.
authors.forename: José Luis
authors.initials: JL
authors.lastname: Bauzá
authors.affiliation: Servicio de Urología. Hospital Universitari Son Espases. Palma de Mallorca. España.
authors.forename: Enrique
authors.initials: E
authors.lastname: Pieras
authors.affiliation: Servicio de Urología. Hospital Universitari Son Espases. Palma de Mallorca. España.
authors.forename: Valentí
authors.initials: V
authors.lastname: Tubau
authors.affiliation: Servicio de Urología. Hospital Universitari Son Espases. Palma de Mallorca. España.
authors.forename: Arnau
authors.initials: A
authors.lastname: Sabaté
authors.affiliation: Servicio de Urología. Hospital Universitari Son Espases. Palma de Mallorca. España.
authors.forename: Jordi
authors.initials: J
authors.lastname: Guimerá
authors.affiliation: Servicio de Urología. Hospital Universitari Son Espases. Palma de Mallorca. España.
authors.forename: Ana
authors.initials: A
authors.lastname: Martínez
authors.affiliation: Servicio de Urología. Hospital Universitari Son Espases. Palma de Mallorca. España.
authors.forename: Juan
authors.initials: J
authors.lastname: Ferrutxe
authors.affiliation: Servicio de Urología. Hospital Universitari Son Espases. Palma de Mallorca. España.
authors.forename: Pedro
authors.initials: P
authors.lastname: Pizá
mesh_terms: D005260:Female; D006801:Humans; D007669:Kidney Calculi / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D016896:Treatment Outcome; D013520:Urologic Surgical Procedures / Q000379:methods