The usefulness of stone density and patient stoutness in predicting extracorporeal shock wave efficiency: Results in a North African ethnic group

Abdelaziz, Hamdoune; Elabiad, Y.A.; Aderrouj, Ilyas; Janane, A.; Ghadouane, M.; Ameur, A.; Abbar, M.

doi:10.5489/cuaj.1849

Cited by 11 publications

(9 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…During ESWL sessions, previous studies have indicated that stone attenuation values can affect treatment outcomes. 24 , 25 However, the present study did not demonstrate a significant difference between the SFR and the density of the stone ( p = 0.819) for URS procedures. Our results may be explained by the mechanism of intracorporeal lithotripsy in both devices, which had the ability to eradicate all types of stones regardless of composition.…”

Section: Discussioncontrasting

confidence: 66%

External Validation of the S.T.O.N.E. Score in Predicting Stone-Free Status After Rigid Ureteroscopic Lithotripsy

Sirirak

Sangkum

Phengsalae

et al. 2021

RRU

View full text Add to dashboard Cite

Background: The Size, Topography, Obstruction, Number, and Evaluation of Hounsfield units (S.T.O.N.E.) scoring system has been proposed as a novel prognostic surgical classification for urolithiasis in predicting success rate and complications. Objective: We carried out an externally validated S.T.O.N.E. score on rigid ureteroscopic lithotripsy (rURS). Materials and Methods: The data of patients who had undergone rURS between 2012 and 2019 at a tertiary referral center were audited retrospectively. The S.T.O.N.E. score was calculated based on factors determined through preoperative computed tomography images and was analyzed in association with stone-free rate (SFR), operating time, surgical complications, and length of stay (LOS). Results: A total of 155 patients were included in the study with a median stone size of 10 mm (7-12) and a median S.T.O.N.E. score of 9 (8-10). The overall SFR was 89.68%. SFRs were 100.0%, 97.83%, and 77.42% in low (5), moderate (6-9), and high (10-13) score groups, respectively. The S.T.O.N.E. score (p = 0.002) and stone size (p = 0.037) were predictive factors for SFR in multivariate analysis. Moreover, there was a significant correlation between the S.T.O.N.E. score and operative time, LOS, and presence of complications (r = 0.22, p = 0.006; r = 0.30, p < 0.001; and r = 0.27, p < 0.001, respectively). The area under the curve of the receiving operator characteristics' curve for the S.T.O.N.E. score was 0.815. Conclusion: The S.T.O.N.E. scoring system is simple and effective in predicting postoperative outcomes; therefore, this score would be a valuable tool in clinical planning for every patient who undergoes rURS.

show abstract

Section: Discussioncontrasting

confidence: 66%

External Validation of the S.T.O.N.E. Score in Predicting Stone-Free Status After Rigid Ureteroscopic Lithotripsy

Sirirak

Sangkum

Phengsalae

et al. 2021

RRU

View full text Add to dashboard Cite

show abstract

“…On multivariate analysis, it was found that stone multiplicity, stone location and HU were independent significant predictors for the treatments after SWL (p values < 0.05) (Table 2). Table 3 summarizes SWL contemporary series tracking the required auxiliary procedures after SWL and predictors of SWL failure (7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20).…”

Section: Resultsmentioning

confidence: 99%

Can we predict the ancillary treatments after extracorporeal shockwave lithotripsy for renal and upper ureteral stones?

Ibrahim

Elatreisy

Khogeer

et al. 2022

Arch Ital Urol Androl

View full text Add to dashboard Cite

Objective: To quantify the predictors for the ancillary treatments after extracorporeal shock wave lithotripsy (SWL) for renal and upper ureteral stones. Materials and methods: From January 2014 to January 2017, patients undergoing SWL using an electromagnetic lithotripter machine (Compact Delta; Dornier MedTech GmbH, Wessling, Germany) for renal and upper ureteral stones ≤ 20 mm were retrospectively reviewed. All patients underwent CT urography prior to SWL. The cohort was subdivided into three groups according to stone attenuation values in Hounsfield Units (HU). Group I; HU < 500 (n = 20), group II; HU 500-1000 (n = 51) and group III; HU ≥ 1000 (n = 180). The parameters included for multivariate analysis were stone size, location, multiplicity, stone attenuation value, number of shocks and stone clearance rate by 3 months. The ancillary treatments were ureteroscopy (URS), ureteral stenting and hospital readmission for pain or fever. Results: A total of 251 patients were included in the study. The overall SWL success rate was 92.4%. Mean stone size was 10.9 ± 2.1, 11.6 ± 3 and 11.4 ± 3.6 mm and mean stone attenuation values were 364 ± 125, 811 ± 154 and 1285 ± 171 HU for groups I, II and III respectively. The stone clearance rates by 3 months were 96%, 92% and 88.4% for groups I, II and III respectively. On subgroup analysis, group III required ancillary treatments in 70% of patients whereas group I, II, did not require any ancillary treatments. On multivariate analysis, stone multiplicity, stone location (lower calyceal stones) and HU were independent significant predictors for the need for ancillary treatments after SWL (p values < 0.05). Conclusions: Patients with stone attenuation value (HU) > 1000, multiple stones and/or lower calyceal stones have higher risk to necessitate ancillary treatments after SWL. These patients would likely benefit from upfront endoscopic lithotripsy for treating symptomatic renal or upper ureteral stones.

show abstract

“…The SSD 90 0 with a cut off value of 11.9 cm was a stronger predictor of stone fragmentation than SSD 0 0 and 45 0 [ 14 ]. Other studies failed to show a similar effect of SSD on stone clearance with ESWL [ 10 - 11 ]. Our study demonstrated that higher SSD is a bad prognostic factor for clearance of ureteric stones.…”

Section: Discussionmentioning

confidence: 97%

“…Non-contrast CT scan has become the imaging investigation of choice not only for the detection of urinary stones but it also plays a role in deciding the modality of treatment and predicts the outcome of that treatment [ 10 - 11 ]. We evaluated the effect of NCCT determining parameters on the success of ESWL for ureteral stones.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Non-Contrast Computed Tomography Scan Based Parameters of Ureteric Stones Affecting the Outcome of Extracorporeal Shock Wave Lithotripsy

Waqas

Khan

Iqbal

et al. 2017

Cureus

View full text Add to dashboard Cite

Objective To compare the non-contrast computed tomography (NCCT) scan-based parameters of ureteric stones affecting the outcome of extracorporeal shock wave lithotripsy (ESWL).Materials and methodsWe retrospectively evaluated the pre-procedure NCCT of 74 patients who had ESWL for solitary ureteric calculi of 5-20 mm in diameter. We assessed the age, sex, basal metabolic index (BMI), laterality, location, presence of double 'J' (DJ) stent, skin to stone distance (SSD), stone maximum diameter, Hounsfield unit (HU), Hounsfield density (HD), area, and volume. All those who had no stone on follow-up imaging within 30 days were declared successful while those who had residual stone were declared failures.ResultsThe overall success rate was 78% (58/74). Sixty (81.1%) patients were male. The success of ESWL was correlated with lower SSD, Hounsfield units (HU) and Hounsfield density (HD). However, in multivariate analysis, SSD, Hounsfield unit, and stone area showed correlation with success of procedure but Hounsfield density failed to show correlation. The success rate in patients with stone HU <500, 500-1000 and >1000 were 93.9%, 69%, and 58.3%, respectively. Patients with lower BMI (<30 kg/m2) and HD (<76 HU/mm) were more prone towards success of the procedure than those with higher BMI (>30 kg/m2) and higher HD (>76 HU/mm).ConclusionBMI, SSD, stone Hounsfield units and Hounsfield unit density were strong predictors of outcome of ESWL for ureteric stone.

show abstract

The usefulness of stone density and patient stoutness in predicting extracorporeal shock wave efficiency: Results in a North African ethnic group

Cited by 11 publications

References 18 publications

External Validation of the S.T.O.N.E. Score in Predicting Stone-Free Status After Rigid Ureteroscopic Lithotripsy

External Validation of the S.T.O.N.E. Score in Predicting Stone-Free Status After Rigid Ureteroscopic Lithotripsy

Can we predict the ancillary treatments after extracorporeal shockwave lithotripsy for renal and upper ureteral stones?

Non-Contrast Computed Tomography Scan Based Parameters of Ureteric Stones Affecting the Outcome of Extracorporeal Shock Wave Lithotripsy

Contact Info

Product

Resources

About