Pd32-09 Multicenter Validation of S.T.O.N.E. Nephrolithometry

Okhunov, Zhamshid; Moreira, Daniel; George, Arvin; Akhavein, Arash; Elsamra, Sammy; Duty, Brian; Motato, Hector; Junco, Michael del; Askarova, Fotima; Rothberg, Michael B.; Gupta, Mantu; Tracy, Chad R.; Sternberg, Kevan; Irwin, Brian H.; King, Benjamin L.; Shapiro, Edan; Moreno, J. Junceda; Srinivasan, A.; Andonian, Sero; Bird, Vincent G.; Smith, Arthur D.; Landman, Jaime; Okeke, Zeph

doi:10.1016/j.juro.2014.02.2280

Cited by 9 publications

(5 citation statements)

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“…Their results confirmed their prior findings that a greater S.T.O.N.E. score correlated with lower stone-free rates, increased bleeding and estimated blood loss, operative time, length of hospital stay, fluoroscopy time, and overall complication rate [8].…”

Section: Diagnosissupporting

confidence: 82%

Advances in percutaneous stone surgery

Hartman

Gupta

Leavitt

et al. 2015

Asian Journal of Urology

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Treatment of large renal stones has changed considerably in recent years. The increasing prevalence of nephrolithiasis has mandated that urologists perform more surgeries for large renal calculi than before, and this has been met with improvements in percutaneous stone surgery. In this review paper, we examine recent developments in percutaneous stone surgery, including advances in diagnosis and preoperative planning, renal access, patient position, tract dilation, nephroscopes, lithotripsy, exit strategies, and post-operative antibiotic prophylaxis.

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Section: Diagnosissupporting

confidence: 82%

Advances in percutaneous stone surgery

Hartman

Gupta

Leavitt

et al. 2015

Asian Journal of Urology

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“…nephrolithometry scores of 117 diseases, Okhunov et al, determined the total rate of the stone-free as 80%. The relationship between the rates of the stone-free and the stone scores was determined to be significant [ 15 ].…”

Section: Discussionmentioning

confidence: 99%

Value of preoperative stone scoring systems in predicting the results of percutaneous nephrolithotomy

Kumsar¹,

Aydemi̇r²,

Halis³

et al. 2015

CEJU

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IntroductionGuy's Stone Score and S.T.O.N.E. Nephrolithometry nomograms have been introduced for systematic and quantitative assessment of kidney stones.The aim of this study was to reveal the value of two scorings systems, Guy and S.T.O.N.E, most frequently used for predicting postoperative stone-free status prior to Percutaneous Nephrolithotomy (PCNL), in the prediction of postoperative results of PCNL.Material and methodsWe retrospectively examined patients who underwent PCNL. Preoperative abdominopelvic computerized tomography images of these patients were reviewed and scored according to the Guy and S.T.O.N.E. systems.The relationship between the Guy and S.T.O.N.E. scores, and their postoperative stone-free status, complications based on Clavien system, operation time, fluoroscopy time and period of hospitalization was compared.ResultsWe identified a total of 102 patients who underwent PCNL between 2010 and 2014, having met the inclusion criteria.The relationships between the total S.T.O.N.E score and Clavien score (p <0.001); time of operation (p = 0.012) and stone-free status (p <0.001); Guy stone score and Clavien score (p <0.001); and period of hospitalization (p <0.001) and time of operation (p <0.001) were found to be statistically significant. There was no statistically significant relationship between Guy score and stone-free status and no statistically significant relationship was found between fluoroscopy time and both stone scoring systems.ConclusionsGuy and S.T.O.N.E. scoring systems may be used as effective instruments particularly for predicting postoperative complications.

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“…Okhunov et al [4] developed and validated the STONE score from preoperative NCECT, based on a Medline review of English-language studies from 1976 to 2012 and identifying clinically relevant variables affecting the outcomes of PCNL. This scoring system was externally validated in a multi-institutional study with 850 patients, and showed that the model was significantly associated with the SFR, overall complication rate, estimated blood loss, operative duration and length of hospital stay [20] . In contrast to the other scoring systems, the STONE score uses variables that are easy to calculate, derived from NCECT (most common diagnostic method used for evaluating patients with stone) and requires no specialised software.…”

Section: Discussionmentioning

confidence: 99%

Prospective evaluation of outcome of percutaneous nephrolithotomy using the ‘STONE’ nephrolithometry score: A single-centre experience

Farhan

Nazim

Salam

et al. 2015

Arab Journal of Urology

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ObjectiveTo assess the prediction of stone clearance and complications of percutaneous nephrolithotomy (PCNL) using the ‘STONE’ nephrolithometry score, assessing stone size, tract length (skin-to-stone distance), degree of obstruction, number of calyces involved and stone essence (density).Patients and methodsThis was a prospective study of patients undergoing single-tract PCNL while prone, conducted at a university hospital. All patients had non-contrast-enhanced computed tomography within 3 weeks of the procedure. Only patients with a unilateral procedure and radio-opaque stones were included. The five variables of the STONE nephrolithometry score were calculated before the procedure. The stone-free rates were assessed with a plain abdominal film at 4 weeks and complications were graded using the modified Clavien system.ResultsIn all, 107 patients were included in the final analysis. Overall, 80% of patients were rendered stone-free. Among the individual variables, a larger stone (P = 0.002) and the involvement of multiple calyces (P = 0.04) were associated with residual stones, while tract length (skin-to-stone distance), stone density and presence of hydronephrosis were not. Patients who were rendered stone-free had a statistically significant lower overall STONE score than those with residual stones, at 7.24 vs. 8.14 (P = 0.02). The score also correlated with operative duration, which was significantly longer with a higher STONE score (P = 0.03). The complication rate was 18% and most complications were Clavien grade 2, with bleeding requiring a blood transfusion (11 patients) being the commonest. There were no deaths within 30 days of surgery, but there was no correlation between the STONE score and complications.ConclusionThe STONE nephrolithometry score is a simple and easy to apply system for predicting complexity in stone clearance with PCNL.

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Pd32-09 Multicenter Validation of S.T.O.N.E. Nephrolithometry

Cited by 9 publications

References 0 publications

Advances in percutaneous stone surgery

Advances in percutaneous stone surgery

Value of preoperative stone scoring systems in predicting the results of percutaneous nephrolithotomy

Prospective evaluation of outcome of percutaneous nephrolithotomy using the ‘STONE’ nephrolithometry score: A single-centre experience

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