Effect of Focal Zone Size on Treatment Outcomes and Renal Injury Following Extracorporeal Shockwave Lithotripsy of Renal Calculi: A Prospective Randomized Study

Ng, Chi-Fai; Yee, Chi Hang; Teoh, Jeremy Y.C.; Chiu, Peter K.F.; Kong, Angel W.Y.; Lau, Becky S.Y.; Leung, Steven C.H.; Wong, Ka Tak; Chu, Winnie C.W.

doi:10.1089/end.2023.0662

Journal of Endourology

2024

DOI: 10.1089/end.2023.0662

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Effect of Focal Zone Size on Treatment Outcomes and Renal Injury Following Extracorporeal Shockwave Lithotripsy of Renal Calculi: A Prospective Randomized Study

Chi-Fai Ng,

Chi Hang Yee,

Jeremy Y.C. Teoh

et al.

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2024

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Risk factors of hematoma after SWL for renal calculi: analysis from RCTs and a literature review

Wong,

Ko,

Tang

et al. 2024

Int Urol Nephrol

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Objective To identify risk factors of perinephric hematoma following extracorporeal shockwave lithotripsy (SWL) for renal calculi through combined analysis of two randomized controlled trials. Patients and methods This post-hoc analysis included adult patients with solitary renal calculi ranging from 5 to 15 mm, treated with SWL between 2016 and 2022. All patients received cross-sectional imaging (either non-contrast computer tomography scan or magnetic resonance imaging) two days post-SWL to assess the presence and severity of perinephric hematoma. Results Among 573 patients analyzed, 173 (30.9%) developed perinephric hematoma by Day 2 post-SWL. Multivariate logistic regression identified higher total energy delivered (odds ratio [OR] = 1.533, p = 0.003), higher mean stone density (OR = 2.603, p = 0.01), higher maximal stone density (OR = 3.578, p = 0.03), and lower pole stone location (OR = 1.545, p = 0.029) were risk factors for the development of hematoma. Conversely, the stepwise ramping protocol was a protective factor for hematoma formation. (OR = 0.572, p = 0.042). Conclusions This study elucidates key factors influencing the risk of perinephric hematoma post-SWL, highlighting the importance of procedural adjustments such as the stepwise ramping protocol to reduce complications. These insights call for targeted patient and treatment strategy optimization to enhance SWL safety and efficacy.

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Risk factors of hematoma after SWL for renal calculi: analysis from RCTs and a literature review

Wong,

Ko,

Tang

et al. 2024

Int Urol Nephrol

View full text Add to dashboard Cite

show abstract

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Effect of Focal Zone Size on Treatment Outcomes and Renal Injury Following Extracorporeal Shockwave Lithotripsy of Renal Calculi: A Prospective Randomized Study

Cited by 1 publication

References 15 publications

Risk factors of hematoma after SWL for renal calculi: analysis from RCTs and a literature review

Risk factors of hematoma after SWL for renal calculi: analysis from RCTs and a literature review

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