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Factors influencing stone-free rate of Extracorporeal Shock Wave Lithotripsy (ESWL); a cohort study

Wagenius, Magnus LU ; Oddason, Karl LU ; Utter, Maria LU orcid ; Popiolek, Marcin ; Forsvall, Andreas LU orcid ; Lundström, Karl Johan and Linder, Adam LU (2022) In Scandinavian Journal of Urology 56(3). p.237-243
Abstract

Objective: To evaluate the success rate of Extracorporeal Shock Wave Lithotripsy (ESWL) therapy and identify relevant treatment-specific factors affecting stone-free rate (SFR) after ESWL. Materials and methods: All ESWL treatments in the years 2016–2019, in Ängelholm Hospital, Skåne, Sweden were analysed retrospectively. Primary outcome was stone-free rate (SFR) at 3 months. Univariate logistic regression was used followed by multivariable regression. Lasso analysis was made to adjust for treatment-specific factors such as age, stone size, skin-to-stone distance (SSD), stone attenuation, number of treatments, stone location and presence of a urinary stent. Results: Factors affecting successful ESWL treatment were lower age (p <... (More)

Objective: To evaluate the success rate of Extracorporeal Shock Wave Lithotripsy (ESWL) therapy and identify relevant treatment-specific factors affecting stone-free rate (SFR) after ESWL. Materials and methods: All ESWL treatments in the years 2016–2019, in Ängelholm Hospital, Skåne, Sweden were analysed retrospectively. Primary outcome was stone-free rate (SFR) at 3 months. Univariate logistic regression was used followed by multivariable regression. Lasso analysis was made to adjust for treatment-specific factors such as age, stone size, skin-to-stone distance (SSD), stone attenuation, number of treatments, stone location and presence of a urinary stent. Results: Factors affecting successful ESWL treatment were lower age (p < 0.001), smaller stone size and volume (both p = 0.001). SSD, stone attenuation, sex, laterality and drainage did not have an effect on SFR in this study. After the first ESWL treatment session, 46.7% of the patients were stone-free. Conclusion: Results indicate that stone size and age are the most predictive factors for ESWL outcome. Based on this, we present a simple model for prediction of SFR after ESWL, to be used when counseling patients before ESWL treatment.

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author
; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Extracorporeal shock-wave lithotripsy, infection, monotherapy, outcome, stone free rate, ureteric stone, ureteroscopy
in
Scandinavian Journal of Urology
volume
56
issue
3
pages
237 - 243
publisher
Taylor & Francis
external identifiers
  • scopus:85129170267
  • pmid:35400281
ISSN
2168-1805
DOI
10.1080/21681805.2022.2055137
language
English
LU publication?
yes
id
9d97cf0a-9cc4-4b44-9272-edec60940d05
date added to LUP
2022-08-15 14:59:00
date last changed
2024-06-13 18:17:48
@article{9d97cf0a-9cc4-4b44-9272-edec60940d05,
  abstract     = {{<p>Objective: To evaluate the success rate of Extracorporeal Shock Wave Lithotripsy (ESWL) therapy and identify relevant treatment-specific factors affecting stone-free rate (SFR) after ESWL. Materials and methods: All ESWL treatments in the years 2016–2019, in Ängelholm Hospital, Skåne, Sweden were analysed retrospectively. Primary outcome was stone-free rate (SFR) at 3 months. Univariate logistic regression was used followed by multivariable regression. Lasso analysis was made to adjust for treatment-specific factors such as age, stone size, skin-to-stone distance (SSD), stone attenuation, number of treatments, stone location and presence of a urinary stent. Results: Factors affecting successful ESWL treatment were lower age (p &lt; 0.001), smaller stone size and volume (both p = 0.001). SSD, stone attenuation, sex, laterality and drainage did not have an effect on SFR in this study. After the first ESWL treatment session, 46.7% of the patients were stone-free. Conclusion: Results indicate that stone size and age are the most predictive factors for ESWL outcome. Based on this, we present a simple model for prediction of SFR after ESWL, to be used when counseling patients before ESWL treatment.</p>}},
  author       = {{Wagenius, Magnus and Oddason, Karl and Utter, Maria and Popiolek, Marcin and Forsvall, Andreas and Lundström, Karl Johan and Linder, Adam}},
  issn         = {{2168-1805}},
  keywords     = {{Extracorporeal shock-wave lithotripsy; infection; monotherapy; outcome; stone free rate; ureteric stone; ureteroscopy}},
  language     = {{eng}},
  number       = {{3}},
  pages        = {{237--243}},
  publisher    = {{Taylor & Francis}},
  series       = {{Scandinavian Journal of Urology}},
  title        = {{Factors influencing stone-free rate of Extracorporeal Shock Wave Lithotripsy (ESWL); a cohort study}},
  url          = {{http://dx.doi.org/10.1080/21681805.2022.2055137}},
  doi          = {{10.1080/21681805.2022.2055137}},
  volume       = {{56}},
  year         = {{2022}},
}