Vol. 42 (3): 479-486, May – June, 2016

doi: 10.1590/S1677-5538.IBJU.2015.0528


A prospective multicenter European study on flexible ureterorenoscopy for the management of renal stone

Francesco Berardinelli 1, Silvia Proietti 2, Luca Cindolo 1, Fabrizio Pellegrini 1, Roberto Peschechera 2, Hennessey Derek 3, Orietta Dalpiaz 4, Luigi Schips 1, Guido Giusti 2
1 Dipartimento di Urologia, “S. Pio da Pietrelcina ‘’ Hospital, Vasto (CH), Italia; 2 Centro di pietra presso il Dipartimento di Urologia, Humanitas centro clinico e di ricerca, Rozzano, Italia; 3 Department of Urology, Craigavon Area Hospital, Portadown (UK); 4 Urologische Klinik, Medizinische Universität Graz, Austria


Purpose: The aim of this study was to describe the outcomes and the complications of retrograde intrarenal surgery (RIRS) for renal stones in a multi-institutional working group.
Materials and Methods: From 2012 to 2014, we conducted a prospective study in¬cluding all RIRS performed for kidney stones in 4 European centers. Demographic information, disease characteristics, and perioperative and postoperative data were gathered. Patients and stone data, procedure characteristics, results and safety outco¬mes were analyzed and compared by descriptive statistics. Complications were reported using the standardized Clavien system.
Results: Three hundred and fifty-six patients underwent 377 RIRS with holmium laser lithotripsy for renal stones. The RIRS was completed in all patients with a mean opera¬tive time of 63.5 min. The stone-free status was confirmed endoscopically and through fluoroscopic imaging after the first procedure in 73.6%. The second procedure was performed in twenty patients (5.6%) achieving an overall stone free rate of 78.9%. The overall complication rate was 15.1%. Intra-operative and post-operative complications were seen in 24 (6.7%) and 30 (8.4%) cases, respectively.
Conclusions: RIRS is a minimally invasive procedure with good results in terms of stone-free and complications rate.

Keywords: Ureteroscopy; Kidney Calculi; Lithotripsy, Laser

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