[Preliminary experience with the Storz Modulith SL 20 lithotriptor in reno-ureteral lithiasis]

The authors report their initial results in ESWL of urinary calculi with the Storz Modulith SL 20 lithotriptor, a multipurpose device for both urinary and biliary stone treatment. During 176 sessions, a total of 144 cases (81 renal and 63 ureteral) were treated and then, followed up. The over-all rate free of stones was 86.8% (90.1% for kidney and for ureteral stones). The treatment rate was 1.23 per patient. Auxiliary procedures before ESWL were performed in 7.9% of the sessions: insertion of "double-J" stent or nephrostomy tube; all ureteral stones received "in situ" treatment. Mean number of shock waves per session was 1836.1 (range 300-3020). The maximum voltage on the average reached was 17.1 kv. Sedo-analgesia by Diazepam and Ketoprofen was given in 75% of the cases. No serious complications were observed. The experience with this machine is discussed in regard to performance; the advantages of its fluoroscopy and ultrasound guided system of focusing are stressed.