The efficacy of retrograde intra-renal surgery (RIRS) for lower pole stones: results from 2946 patients

Giulioni, Carlo and Castellani, Daniele and Somani, Bhaskar Kumar and Chew, Ben Hall and Tailly, Thomas and Keat, William Ong Lay and Teoh, Jeremy Yuen-Chun and Emiliani, Esteban and Chai, Chu Ann and Galosi, Andrea Benedetto and Ragoori, Deepak and Tanidir, Yiloren and Hamri, Saeed Bin and Gadzhiev, Nariman and Traxer, Olivier and Gauhar, Vineet (2023) The efficacy of retrograde intra-renal surgery (RIRS) for lower pole stones: results from 2946 patients. World Journal of Urology, 41 (5, SI). pp. 1407-1413. ISSN 0724-4983, DOI https://doi.org/10.1007/s00345-023-04363-6.

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Abstract

PurposeTo evaluate the perioperative outcomes of retrograde intra-renal surgery (RIRS) for lower pole stones (LPS) and factors affecting stone-free rate (SFR).MethodsData from 20 centers were retrospectively reviewed. Inclusion criteria were adult patients, normal renal anatomy, and LPS. Exclusion criteria were bilateral surgery, concomitant surgery for ureteral stones. SFR was defined as a single residual fragment (RF) <= 2 mm and evaluated 3-months after surgery. A multivariable logistic regression analysis was performed to assess factors associated with RF. Statistical significance was set at p value < 0.05.Results2946 patients were included. Mean age and stone size were 49.9 years 10.19 mm, with multiple LPS in 61.1% of cases. Total operation and laser time were 63.89 +/- 37.65 and 17.34 +/- 18.39 min, respectively. Mean hospital stay was 3.55 days. Hematuria requiring blood transfusion and fever/urinary infections requiring prolonged antibiotics occurred in 6.1% and 169 5.7% of cases, while sepsis with intensive-care admission in 1.1% of patients. On multivariate analysis, Multiple stones (OR 1.380), stone size (OR 1.865), and reusable ureteroscopes (OR 1.414) were significantly associated with RF, while Thulium fiber laser (TFL) (OR 0.341) and pre-stenting (OR 0.750) were less likely associated with RF.ConclusionsRIRS showed safety and efficacy for LPS with a mean diameter of 10 mm. This procedure can achieve a satisfactory SFR in pre-stented patients with a single and smaller stone, particularly with TFL use.

Item Type: Article
Funders: Universita Politecnica delle Marche within the CRUI-CARE Agreement
Uncontrolled Keywords: Nephrolithiasis; Retrograde intra-renal surgery; Lower polar stones; Endourology; Laser lithotripsy
Subjects: R Medicine > R Medicine (General)
Divisions: Faculty of Medicine > Surgery Department
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 22 Jul 2025 00:40
Last Modified: 22 Jul 2025 00:40
URI: http://eprints.um.edu.my/id/eprint/50852

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