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  • Title: Extracorporeal shock-wave lithotripsy with Lithostar lithotriptor.
    Author: Rodrigues Netto N, Lemos GC, Claro JF.
    Journal: Urology; 1992 Nov; 40(5):430-4. PubMed ID: 1441040.
    Abstract:
    Initial experience of extracorporeal shock-wave lithotripsy (ESWL) using the Lithostar lithotriptor is reported; 193 patients underwent 248 treatments for 210 stones. A total of 139 renal calculi (126 patients) and 71 ureteral stones (67 patients) were analyzed. Treatments were performed without anesthesia in 65 calculi (27.6%), with intravenous sedation in 91 (42.5%), and under epidural anesthesia in 34 calculi (29.9%). A three-month follow-up showed a success rate of 88.0 percent for renal calculi and 95.5 percent for ureteral calculi treated in situ. Renal stone fragmentation was achieved with a mean of 4,890 shocks at 17.4 kV and ureteral calculi were fragmented with a mean number of 4,798 shocks at a mean of 18.3 kV. Auxiliary procedures after ESWL were required in 2 patients with renal stones and in 1 with ureteral calculi. A comparison between stone size and number of shock waves required to achieve stone fragmentation revealed a linear relationship. Hospitalization was not necessary in 84.4 percent of renal calculi and 89.6 percent of ureteral calculi. Retreatments were necessary in 22 (15.8%) of the renal calculi (18 had 2 sessions, 3 had 3 sessions, and 1 had 4 sessions). Of the ureteral calculi, 8 (11.3%) underwent retreatment (6 had 2 sessions, 1 had 3 sessions, and 1 had 4 sessions). The low morbidity with a large number of patients treated on an outpatient basis, minimizing the need for anesthesia, demonstrated a favorable initial successful experience with the Lithostar.
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