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Erschienen in: Urolithiasis 1/2023

01.01.2023 | COVID-19 | Research

Development and validation of a predictive model for treatment outcome after emergency extracorporeal shockwave lithotripsy in patients with symptomatic ureteral stones during the COVID-19 pandemic: in a large prospective cohort

verfasst von: Lvwen Zhang, Jia Li, Chunyu Pan, Yunhong Zhan, Zhenhua Li, Song Bai

Erschienen in: Urolithiasis | Ausgabe 1/2023

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Abstract

The predictors of treatment outcome after emergency extracorporeal shockwave lithotripsy (SWL) are not well characterized. Therefore, based on a large prospective cohort, we aimed to develop and validate a nomogram for predicting treatment outcome after emergency SWL in patients with symptomatic ureteral stones. The development cohort included 358 patients with symptomatic ureteral stones who underwent emergency SWL between June 2020 and August 2021 in our hospital. One hundred and twenty-nine patients with symptomatic ureteral stones participated in the validation cohort from September 2021 to April 2022. The data were prospectively recorded. The backward stepwise selection was applied using the likelihood ratio test with Akaike’s information criterion as the stopping rule. The efficacy of this predictive model was assessed concerning its clinical usefulness, calibration, and discrimination. Finally, 15.6% (56/358) of patients in the development cohort and 14.0% (18/129) of those in the validation cohort suffered from stone-free failure after emergency SWL. We identified four predictors for stone-free failure: stone size, stone density, skin to stone distance (SSD), and degree of hydronephrosis. This model showed good discrimination with an area under the receiver operating characteristic (AUROC) curves of 0.935 (0.899–0.971) and good calibration (P = 0.059). The decision curve analysis showed that the model was clinically valuable. In this large prospective cohort, we found that stone size, stone density, SSD, and degree of hydronephrosis were predictors of treatment outcome after emergency SWL. This nomogram will be helpful in preoperative risk stratification to provide individualized treatment recommendations for each patient. Furthermore, early identification and appropriate management of patients may increase the success rate of emergency SWL during the COVID-19 pandemic.
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Metadaten
Titel
Development and validation of a predictive model for treatment outcome after emergency extracorporeal shockwave lithotripsy in patients with symptomatic ureteral stones during the COVID-19 pandemic: in a large prospective cohort
verfasst von
Lvwen Zhang
Jia Li
Chunyu Pan
Yunhong Zhan
Zhenhua Li
Song Bai
Publikationsdatum
01.01.2023
Verlag
Springer Berlin Heidelberg
Schlagwort
COVID-19
Erschienen in
Urolithiasis / Ausgabe 1/2023
Print ISSN: 2194-7228
Elektronische ISSN: 2194-7236
DOI
https://doi.org/10.1007/s00240-022-01401-7

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