A Comparative Observation on Success Rates of Stone Dislodgers

Kang, Young Tai; Woo, Tae Hyung

Abstract

A comparative observation was done on 139 patients of the lower ureteral stone, those were applied cystoscopic manipulation with 3 different types of stone dislodger at the Department of Urology, Seoul Adventist Hospital, during the periods from Jan. 1982 to June 1985. During that periods, we applied end-loop catheter in 48 patients, blunt-tip Dormia basket in 38 patients. The results were as follows; 1. The success rate of passage of dislodger beyond the stone was the highest in filiform-tip Dormia basket (97.4%) and loop catheter was the lowest (8l.3%). 2. The success rate of the primary stone extraction with filiform-tip Dormia basket was the highest (86.8%). 3. Indwelling of the dislodger in the ureter loop catheter was the most successful method among them(62.5%). 4. Of the cases of passage beyond the stone, the success rates of the stone extraction were very high and similar in their results, as in 92.3% with loop catheter, in 90.9% with blunt-tip Dormia basket, in 91.9% with filiform-tip Dormia basket. 5. The overall success rate of stone extraction was 75.0% in loop catheter, 75.5% in blunt-tip Dormia basket 89.5% in filiform-tip Dormia basket.