Endoscopic laser fragmentation of ureteral calculi using the holmium:YAG

Jeanie Sayer; Douglas E. Johnson M.D.; Roger E. Price D.V.M.; Douglas M. Cromeens D.V.M.

doi:10.1117/12.146231

28 May 1993 Endoscopic laser fragmentation of ureteral calculi using the holmium:YAG

Jeanie Sayer, Douglas E. Johnson M.D., Roger E. Price D.V.M., Douglas M. Cromeens D.V.M.

Proceedings Volume 1879, Lasers in Urology, Gynecology, and General Surgery; (1993) https://doi.org/10.1117/12.146231
Event: OE/LASE'93: Optics, Electro-Optics, and Laser Applications in Scienceand Engineering, 1993, Los Angeles, CA, United States

Abstract

We used the holmium:YAG (Ho:YAG) laser successfully to fragment human urinary calculi of various sizes and compositions. At an energy level of 0.5 J/pulse and a frequency of 5 Hz, lithotripsy resulted in minimal ureteral-wall injury that was limited to superficial coagulative necrosis of the submucosa. Increasing the amount of energy or the frequency level, however, often resulted in significant damage to deeper ureteral tissue. When performed at low power settings with care to avoid direct ureteral-wall contact, Ho:YAG laser lithotripsy is safe and effective.

Citation Download Citation

Jeanie Sayer, Douglas E. Johnson M.D., Roger E. Price D.V.M., and Douglas M. Cromeens D.V.M. "Endoscopic laser fragmentation of ureteral calculi using the holmium:YAG", Proc. SPIE 1879, Lasers in Urology, Gynecology, and General Surgery, (28 May 1993); https://doi.org/10.1117/12.146231

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