What is the stone-free rate following flexible ureteroscopy for kidney stones?

Ghani, Khurshid R.; Wolf, J. Stuart

doi:10.1038/nrurol.2015.74

Cited by 119 publications

(81 citation statements)

References 72 publications

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“…Residual stone status was categorized as stone free (no fragments present), insignificant residual fragment (residual fragments smaller than 2 mm), and significant residual fragment (residual fragments larger than 2 mm). 13 Primary stone composition was obtained on dry stone fragments when available. Perioperative complications occurring within 30 days postoperatively were identified and classified using the Clavien-Dindo classification system.…”

Section: Methodsmentioning

confidence: 99%

A Prospective Case–Control Study Comparing LithoVue, a Single-Use, Flexible Disposable Ureteroscope, with Flexible, Reusable Fiber-Optic Ureteroscopes

Usawachintachit

Isaacson

Taguchi

et al. 2017

Journal of Endourology

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Objective: LithoVueÔ is a novel, single-use, digital flexible ureteroscope that was released to the US market in January 2016. There are scant data regarding its performance in humans. Procedural outcomes comparing LithoVue with reusable ureteroscopes are presented in patients undergoing ureteroscopy for upper urinary tract pathology. Patients and Methods: Clinical outcomes between two groups of patients undergoing flexible ureteroscopy for upper urinary tract pathology were analyzed. The first group underwent surgery utilizing LithoVue, and the second group used reusable fiber-optic flexible ureteroscopes. Differences in procedural outcomes, operative times, and time spent in hospital were analyzed using two-tailed t-tests and chi-squared and Fisher's exact tests. Results: One hundred fifteen cases utilizing LithoVue and 65 cases utilizing reusable ureteroscopes were included in this study. Demographics, surgical indications, stone size, location, total stone burden, composition, procedural outcomes, and complications were comparable between groups. For all cases, LithoVue procedures lasted 54.1 -25.7 minutes compared with 64.5 -37.0 minutes for reusable scope procedures ( p < 0.05) and for stone removal cases, 57.3 -25.1 vs 70.3 -36.9 minutes, respectively ( p < 0.05). Scope failure occurred in 4.4% of LithoVue cases and 7.7% of reusable cases ( p = 0.27). Conclusions: LithoVue represents a feasible alternative to reusable ureteroscopes with a low rate of scope failure comparable with reusable ureteroscopes. Its use shortens procedure duration, a finding that warrants further investigation.

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Section: Methodsmentioning

confidence: 99%

A Prospective Case–Control Study Comparing LithoVue, a Single-Use, Flexible Disposable Ureteroscope, with Flexible, Reusable Fiber-Optic Ureteroscopes

Usawachintachit

Isaacson

Taguchi

et al. 2017

Journal of Endourology

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“…The selection of the treatment usually depends on the patient and stone characteristics, in addition to patient personal preference. The use of RIRS has increased relative to percutaneous nephrolithotomy and shock wave lithotripsy (SWL) [4]. The comparison of PCNL or RIRS, in terms of high stone-free rates, should be complemented by a comparison of the treatments in terms of major complications, such as postoperative fever.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Postoperative Fever and Effectiveness of Percutaneous Nephrolithotomy (PCNL) Versus Retrograde Intrarenal Surgery (RIRS) for the Treatment of Renal Stones

Gill

D’Arrigo

Wit

2018

SN Compr. Clin. Med.

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The aim of this study is to compare the effectiveness and the relative risk of postoperative fever between percutaneous nephrolithotomy and retrograde intrarenal surgery for the treatment of renal stones. At the Cannizzaro Hospital in Catania, a total 168 patients with one or more renal stones underwent one of more interventions, resulting in 177 independent records; 62 records related to PCNL treatment and 115 records involved RIRS treatment. To assess the relationship between patient and stone characteristics on the one hand and stone-free rate and the incidence rate of postoperative fever on the other, a generalized additive logistic models was used. We found that stone burden, defined in terms of stone diameter, the number of stones and stone density, is a significant predictor for the success of the intervention. Furthermore, PCNL treatment was significantly less successful for stone in the middle calyx, whereas RIRS obtained significantly lower success rate for stone in the lower calyx that had a sharp infundibular angle. Importantly, for renal stones with a diameter up to 2 cm, RIRS has a very similar success rate compared to PCNL. Stones with a diameter larger than 2 cm are best treated by PCNL. Across the two treatments, older patients and men have lower incidence rate of postoperative fevers. The fact that RIRS has much lower postoperative fever rates for male and younger patients compared to PCNL, means that RIRS could be the treatment of choice for small and midsized stones for such patients.

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“…Improvement of the instruments as well as endoscopic technology has made flexible ureteroscopy (fURS) as an increasingly popular treatment option for patients with renal stones (Ghani & Wolf, 2015; Dauw et al, 2015; Wang & Preminger, 2011). Indication for fURS also has been extended, even for stone larger than 2 cm (Aboumarzouk et al, 2012; Breda et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Flexible ureteroscopy for renal stone without preoperative ureteral stenting shows good prognosis

Zhang

et al. 2016

PeerJ

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PurposeTo clarify the outcome of flexible ureteroscopy (fURS) for management of renal calculi without preoperative stenting.MethodsA total of 171 patients who received 176 fURS procedures for unilateral renal stones were reviewed. All procedures were divided into two groups depending on whether they received ureteral stenting preoperatively. Baseline characteristics of patients, stone burden, operation time, stone-free rates, and complications were compared between both groups.ResultsSuccessful primary access to the renal pelvis was achieved in 104 of 114 (91.2%) patients without preoperative stenting, while all procedures with preoperative stenting (n = 62) were successfully performed. A total of 156 procedures were included for further data analysis (56 procedures in stenting group and 100 in non-stenting group). No significant differences was found regardless of a preoperative stent placement in terms of stone-free rate (73.2% with stenting vs. 71.0% without, P = 0.854), operative time (70.4 ± 32.8 with stenting vs. 70.2 ± 32.1 without, P = 0.969).ConclusionsfURS for management of renal stone without preoperative ureteral stenting are associated with well outcome in short term follow-up. Our study may help patients and doctors to decide if an optional stent is placed or not.

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What is the stone-free rate following flexible ureteroscopy for kidney stones?

Cited by 119 publications

References 72 publications

A Prospective Case–Control Study Comparing LithoVue, a Single-Use, Flexible Disposable Ureteroscope, with Flexible, Reusable Fiber-Optic Ureteroscopes

A Prospective Case–Control Study Comparing LithoVue, a Single-Use, Flexible Disposable Ureteroscope, with Flexible, Reusable Fiber-Optic Ureteroscopes

Comparison of Postoperative Fever and Effectiveness of Percutaneous Nephrolithotomy (PCNL) Versus Retrograde Intrarenal Surgery (RIRS) for the Treatment of Renal Stones

Flexible ureteroscopy for renal stone without preoperative ureteral stenting shows good prognosis

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