LT-01 (Laboratorios Liomont)

From July 1993 through March 1994, 512 ESWL therapy was performed on upper urinary tract calculi in 277 renoureteral units using an EDAP LT-02 Lithotripter. Of these cases, 244 renoureteral units which were followed up for more than 3 months after ESWL were examined. These included 124 renal stones and 100 ureteral stones. Complete removal or sufficient stone disintegration was obtained in 66.7, 98.0 and 94.1% in the R1, R2 and R3 groups of renal stones, respectively, and in 92.4, 87.5 and 100% in the U1, U2 and U3 groups of ureteral stones, respectively. The over-all stone-free and success rates were 78.2 and 95.2%, respectively for renal stones and 93.0% and 94.0% respectively for ureteral stones. These results were better than those obtained by LT-01 in our experiences. The newly built-in coaxial X-ray system greatly contributed to these high success rates. As side effects, there were no serious complications. It is concluded that ESWL using an EDAP LT-02 is safer and more effective for the treatment of upper urinary tract calculi.

Extracorporeal shock wave lithotripsy (ESWL) by EDAP LT-01 was used to treat 77 patients with upper urinary tract stones. A total of 218 sessions were performed for 111 stones in 52 kidney units and 41 stones in 37 upper ureter units, and 77% of the 52 kidney stone units and 62% of the 37 ureter units were completely disintegrated. The success of fragmentation of kidney stones differed with the size of the stone, 96% of the stones less than 21 mm and 63% of the 8 stones between 21 and 30 mm were successfully fragmented. The success of fragmentation of ureteral stones differed auxiliary manipulation. Eighty-one percent of the 21 ureteral stones moved into the kidney, were successfully disintegrated, but 40% of the 20 stones unmoved could be disintegrated with retrograde manipulation. Of the 62 successful units, 89% became stone free within 3 months. Complications were subcapsular renal hematoma in 3 patients and obstruction in 5 patients. The initial 25 patients were treated under epidural anesthesia and 52 patients were treated without anesthesia. The results show that the indication of ESWL with LT-01 is better for the stones smaller than 30 mm and the indication should be determined after a couple of sessions for stones greater than 30 mm. ESWL with LT-01 can be performed on an out-patient basis without anesthesia in many cases.