Korean J Urol.  2008 Jan;49(1):60-65.

Holmium:YAG Laser Lithotripsy as a Treatment Modality for Ureteral Calculi

Affiliations
  • 1Department of Urology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea. arlef@uuh.ulsan.kr

Abstract

PURPOSE: We evaluated the results of Holmium:YAG laser lithotripsy according to the size and location of the ureteral stones.
MATERIALS AND METHODS
Between March 1998 and April 2007, the medical records of 203 patients who were treated with ureteroscopic Holmium: YAG laser lithotripsy due to ureteral calculi were reviewed. They were subgrouped by the size and the location of the ureteral stones. The results of treatment were evaluated by the stone free rate and the mean operation time of each group.
RESULTS
The stone free rates of the upper, mid and lower ureter stone groups were 73.3%, 96.1% and 100%, respectively. There was a significant difference in the upper ureter stone group compared to the other two groups, and especially for the group with stone less than 10mm. Stone migration into the renal pelvis or calyx was a major cause of failure in the patients with upper ureter stones. 8 cases showed stone migration and 2 cases showed fragment migration.
CONCLUSIONS
As Holmium:YAG laser lithotripsy has a low complication rate and a high stone free rate, it is an effective treatment modality for ureteral calculi. However, such procedures should be performed carefully because the thermal effect of the Holmium:YAG laser causes ureteral perforation, and especially in the cases of impacted or large stones. Other effective alternatives such as trapping devices need to be studied for patients with upper ureteral stones to prevent stone migration.

Keyword

Ureteral calculi; Holmium; Lithotripsy

MeSH Terms

Holmium
Humans
Kidney Pelvis
Lasers, Solid-State
Lithotripsy
Lithotripsy, Laser
Medical Records
Ureter
Ureteral Calculi
Holmium
Full Text Links
  • KJU
Actions
Cited
CITED
export Copy
Close
Share
  • Twitter
  • Facebook
Similar articles
    DB Error: unknown error