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Extracorporeal shock wave lithotripsy with the Lithostar lithotriptor
P A Grace1, P Gillen, J M Smith
1Department of Urology, University College Dublin, Mater Misericordiae Hospital, Ireland.
British Journal of Urology
|August 1, 1989
Summary
Extracorporeal shock wave lithotripsy (ESWL) with the Lithostar device effectively fragments kidney, ureter, and staghorn stones. This study shows high fragmentation and clearance rates, with a linear relationship between stone size and shock waves needed.
Area of Science:
- Urology
- Nephrology
- Medical Devices
Background:
- Kidney stones (renal calculi), ureteric calculi, and staghorn calculi pose significant clinical challenges.
- Effective stone fragmentation and clearance are crucial for successful treatment outcomes.
Purpose of the Study:
- To report early clinical experience with the Lithostar lithotriptor for stone treatment.
- To evaluate the efficacy and safety of extracorporeal shock wave lithotripsy (ESWL) using the Lithostar device.
Main Methods:
- 145 patients underwent 185 ESWL treatments for 189 stones using the Lithostar.
- Treatments utilized intravenous sedation/analgesia (90%) or general anesthesia (10%).
- Stone fragmentation success was assessed based on the number of shocks and voltage (kV).
Main Results:
- Immediate stone fragmentation rate was 90%, with a 3-month clearance rate of 88%.
- An average of 1724 shocks at 19 kV were required for fragmentation.
- A linear relationship was observed between stone size and the number of shock waves needed.
Conclusions:
- The Lithostar is a highly effective second-generation lithotriptor for various stone types (renal, staghorn, ureteric).
- It allows for in situ treatment without manipulation, demonstrating its versatility and efficacy.