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Related Experiment Videos

Experience with instrumental chemolysis for urolithiasis.

E Dormia1, G Dormia, G Malagola

  • 1Department of Urology, San Carlo Borromeo Hospital, Milano, Italy.

The Journal of Urology
|September 23, 2003
PubMed
Summary

Direct renal or ureteral chemolysis offers an efficient solution for dissolving calcium magnesium stones. This 20-year study shows its effectiveness in treating cystine and difficult stones, and reducing staghorn stones before lithotripsy.

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Area of Science:

  • Urology
  • Nephrology
  • Medical Devices

Background:

  • Calcium magnesium stones, including cystine and struvite types, pose significant treatment challenges.
  • Traditional methods like lithotripsy and endourology can be difficult or carry risks for certain stone burdens.

Purpose of the Study:

  • To describe an efficient irrigation technique for direct renal or ureteral chemolysis.
  • To present the indications and outcomes of a 20-year experience with this chemolysis technique.

Main Methods:

  • Utilized coaxial catheters for a 1-way circulation perfusion system.
  • Employed gravity-driven continuous flow with negative pressure maintenance.
  • Developed a mobile support system for patient mobility within the hospital.

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Main Results:

  • Completely dissolved 8 cystine stones and 20 difficult stones over 20 years.
  • Reduced the volume of 39 staghorn struvite stones by an average of 80% prior to lithotripsy.
  • Achieved complete stone dissolution or significant volume reduction with minimal side effects.

Conclusions:

  • Chemolysis is effective for eliminating cystine stones and managing difficult cases where other methods are risky.
  • This technique is valuable for reducing staghorn stones, facilitating subsequent lithotripsy.
  • Direct renal or ureteral chemolysis provides a safe and efficient treatment option for specific stone types.