External Validation and Comparison of Nephrolithometric Scoring Systems Predicting Outcomes of Retrograde Intrarenal Surgery.

Journal of Endourology
Volkan SelmiLevent Işıkay

Abstract

Introduction: Preoperative assessment of renal stones is essential to selecting treatment options and achieving high success rates; thus, some nephrolithometric scoring systems have been developed by using preoperative clinical data and stone characteristics. Initially, nomograms predicting stone-free rates (SFRs) were designed for percutaneous nephrolithotomy. After this, some were modified, and new scoring systems were developed for retrograde intrarenal surgery (RIRS). In this study, we aimed at validating and comparing the accuracy of four scoring systems predicting the SFR of RIRS. Materials and Methods: We conducted a prospective study. The data of 110 consecutive patients who required RIRS for renal stones between May 2018 and February 2020 were evaluated. The patients were divided into four groups regarding total score: 0, 1, 2, ≥3 according to the Resorlu-Unsal Stone Score (RUSS). The scores were calculated between 5 and 15 for the size of the stone, topography or location, degree of obstruction of the urinary system, number of stones, and evaluation of Hounsfield units (S.T.O.N.E.) scoring system. Modified Seoul National University Renal Stone Complexity (S-ReSC) scores of the patients were between 1 and 12. Finally, ...Continue Reading

References

Jan 1, 1976·Scandinavian Journal of Urology and Nephrology·I Fernström, B Johansson
May 31, 2012·Journal of Endourology·Omar M AboumarzoukBhaskar K Somani
Jan 29, 2013·The Journal of Urology·Arthur SmithUNKNOWN CROES PCNL Study Group
Mar 20, 2014·International Braz J Urol : Official Journal of the Brazilian Society of Urology·Wilson R MolinaDavid E Sehrt
May 11, 2016·International Urology and Nephrology·Stavros SfoungaristosMordechai Duvdevani
Feb 23, 2020·Minerva urologica e nefrologica = The Italian journal of urology and nephrology·Biagio BaroneDomenico Prezioso

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Software Mentioned

RUSS
Statistical Package for the Social Sciences
SPSS
ReSC

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