Piezoelectric Shockwave Lithotripsy of Urinary Calculi: Comparative Study of Stone Depth in Kidney and Ureter Treatments

Robert, M; S, A'ch; Lanfrey, P.; Guiter, J; Navratil, H

doi:10.1089/end.1999.13.699

Cited by 28 publications

(17 citation statements)

References 13 publications

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“…9,17 In the present study, results show that BC is an independent predictor for ESWL failure for MLU calculi. For patients in the supine position, the bladder and pelvic ureter may move significantly downwards, 18 thereby affecting SSD for MLU calculi.…”

Section: Discussionsupporting

confidence: 55%

Body mass index and buttock circumference are independent predictors of disintegration failure in extracorporeal shock wave lithotripsy for ureteral calculi

Yang

Lee

et al. 2013

Journal of the Formosan Medical Association

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Section: Discussionsupporting

confidence: 55%

Body mass index and buttock circumference are independent predictors of disintegration failure in extracorporeal shock wave lithotripsy for ureteral calculi

Yang

Lee

et al. 2013

Journal of the Formosan Medical Association

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“…It has been suggested that the lower success rates of ESWL in morbidly obese patients observed in other studies may have been related to increased absorption of the shockwave by thicker tissues in these patients. [18,19] Furthermore, the lower success rates observed in obese patients may have also been related to the increased difficulty in localizing the stone and focusing the ESWL beam.…”

Section: Discussionmentioning

confidence: 99%

Does morbid obesity influence the success and complication rates of extracorporeal shockwave lithotripsy for upper ureteral stones?

Dede¹,

Şener²,

Baş³

et al. 2015

Turkish Journal of Urology

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Objective: The aim of the current study was to investigate whether obesity influences the outcome of extracorporeal shockwave lithotripsy (ESWL) treatment for upper ureteral stones. Material and methods:This is a retrospective study of 134 patients who underwent ESWL between June 2011 and May 2014. Patients were divided into 2 groups. Group 1 comprised 94 patients of normal weight, and group 2 comprised 40 morbidly obese patients. Patients in both groups had upper ureteral stones. Results:The mean age of groups 1 and 2 was 45.6±12.1 and 45.3±15.5 years, respectively (p=0.98). There was no significant difference in demographic variables between the groups. The mean stone size in groups 1 and 2 was 81.7±25.7 mm² and 86.3±22.4 mm², respectively (p= 0.51), the mean body mass index (BMI) was 27.4±2.9 and 42.9±2.1, respectively (p<0.01), the mean number of ESWL sessions was 2.4±0.6 and 2.4±0.7, respectively (p= 0.97), and the mean follow-up time was 7.1±3.4 and 6.6±2.8 weeks, respectively (p= 0.67). The overall stone-free rate was 82% in group 1 and 67% in group 2 (p=0.01). Conclusion:It is well-known that morbidly obese patients have higher rates of anesthesia-related problems due to the comorbidities commonly observed in this population. In the current study, we found that ESWL is a safe and acceptable treatment option for morbidly obese patients with upper ureteral stones.

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“…However, the ESWL efficacy in obese patients is not as high as in non-overweight patients, mainly due to poorer identification of the stone, increased skin-to-stone distance and the shock-wave attenuation by body fat, which has some effect on the efficiency of stone fragmentation [7,11,17,19,21].…”

Section: Discussionmentioning

confidence: 99%

Feasibility and efficacy of extracorporeal shock-wave lithotripsy using a new modified lateral position for the treatment of renal stones in obese patients

et al. 2011

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The aim of our study was to evaluate the efficacy and safety of ESWL using a modified lateral position in obese patients with renal stones. Nineteen obese patients with renal stones were enrolled (group A). The mean stone diameter was 1.3 cm (0.7-1.9 cm). The mean BMI was 35.1 kg/m² (31-41 kg/m²). Patients were placed in the lateral position, with the energy source facing their body posteriorly and the site where the stone was located in direct contact with the water cushion. Success rate (defined as the percentage of patients who were stone-free or with insignificant fragments after 3 months), mean number of ESWL sessions, mean duration of ESWL session and complications were recorded. The results were compared with those of 17 obese patients (Group B) with similar baseline characteristics treated in the standard supine position. All ESWLs were performed using the Dornier lithotripter SII. Both success rate (68.4 vs. 64.7% for groups A and B, respectively) and mean number of sessions (2.2 vs. 2.6) did not differ significantly between the two groups (p = 0.5). Interestingly, the time required to complete ESWL was significantly shorter for group A patients (56 min) compared to group B (73 min) (p = 0.001). No severe complications (including hematoma, pyelonephritis) were recorded. Our data indicate that ESWL in the modified lateral position for renal calculi in obese patients seems to be feasible and safe. In addition, it is faster than in the supine position since it overcomes technical difficulties. Further studies with a large number of patients are required to support our findings.

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Piezoelectric Shockwave Lithotripsy of Urinary Calculi: Comparative Study of Stone Depth in Kidney and Ureter Treatments

Abstract: Stone depth has a significant influence on treatment outcome after piezoelectric SWL for both renal and ureteral calculi. We recommend particular attention be given to corpulent patients presenting with ureteral stones.

Cited by 28 publications

References 13 publications

Body mass index and buttock circumference are independent predictors of disintegration failure in extracorporeal shock wave lithotripsy for ureteral calculi

Body mass index and buttock circumference are independent predictors of disintegration failure in extracorporeal shock wave lithotripsy for ureteral calculi

Does morbid obesity influence the success and complication rates of extracorporeal shockwave lithotripsy for upper ureteral stones?

Feasibility and efficacy of extracorporeal shock-wave lithotripsy using a new modified lateral position for the treatment of renal stones in obese patients

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