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Related Experiment Videos

[Second generation shock wave lithotripsy: experience with the Siemens Lithostar].

A Ben1, T Tanaka, K Shiraiwa

  • 1Department of Urology, Kanazawa Medical University.

Hinyokika Kiyo. Acta Urologica Japonica
|December 1, 1989
PubMed
Summary

Extracorporeal shock wave lithotripsy (ESWL) using the Siemens Lithostar and Dornier HM3 showed similar stone-free rates. The Lithostar required more shock waves but is a multifunctional device for kidney stone treatment.

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Area of Science:

  • Urology
  • Nephrolithiasis Treatment
  • Medical Device Technology

Context:

  • Extracorporeal shock wave lithotripsy (ESWL) has become a standard non-surgical treatment for kidney stones since its introduction in 1980.
  • Advancements in lithotripter technology have led to the development of 'second-generation' devices, prompting comparisons with established 'first-generation' models like the Dornier HM3.
  • This study evaluates the clinical performance of the Siemens Lithostar, a newer lithotripter, against the Dornier HM3.

Purpose:

  • To compare the clinical efficacy and outcomes of ESWL using the Siemens Lithostar versus the Dornier HM3.
  • To assess the number of shock waves required, the need for adjuvant therapies, and the stone-free rates for both lithotripter devices.
  • To evaluate the Siemens Lithostar as a multifunctional lithotripter.

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Summary:

  • A total of 200 patients underwent ESWL, with 100 treated by HM3 and 100 by Lithostar.
  • While both devices achieved comparable stone-free rates (HM3: 84.3%, Lithostar: 83.5%) within one month, the Lithostar required significantly more shock waves for stone fragmentation.
  • The Lithostar showed a higher incidence of adjuvant procedures for ureteral stones compared to the HM3, though overall, approximately 10% of patients needed additional treatments regardless of the device.

Impact:

  • The Siemens Lithostar demonstrates comparable stone-free rates to the Dornier HM3, indicating its clinical viability for nephrolithiasis treatment.
  • Despite requiring more shock waves and potentially more adjuvant procedures for ureteral stones, the Lithostar's multifunctional nature offers advantages.
  • This comparative analysis provides valuable insights for clinicians selecting ESWL devices, highlighting the trade-offs between different lithotripter generations.