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  • Title: In situ extracorporeal shock wave lithotripsy for ureteral calculi.
    Author: Rodrigues Netto Júnior N, Lemos GC, Claro JF.
    Journal: J Urol; 1990 Aug; 144(2 Pt 1):253-4. PubMed ID: 2374188.
    Abstract:
    We reviewed our experience with in situ extracorporeal shock wave lithotripsy for ureteral stones in 30 patients. The Siemens Lithostar unit was used for stone disintegration and no attempts were made to manipulate the calculi back into the kidney. During the study period 15 patients presented with upper, 9 with mid and 6 with lower ureteral calculi. The mean stone size was 5 x 12 mm. The success rates in stone removal, hospitalization, anesthesia, average number of shocks and kilovolts used were analyzed. Complete removal of all calculous material was obtained in 86.6% of the patients after 3 months. Followup consisted of a plain film of the kidneys, ureters and bladder, and eventually renal ultrasound 1 day and 1 to 3 months postoperatively. Routinely, patients were treated without hospitalization, while 3 had persistent stone fragments and required hospitalization for auxiliary endourological procedures. The average hospital stay for these patients was 1.6 days. Of the 30 patients 13 (43.4%) were treated without anesthesia, 9 (30.0%) received intravenous sedation and 8 (26.6%) had epidural anesthesia. Patients received 3,000 to 6,000 shock waves per session (median 4,000) at 14.0 to 19.0 kv. (median 18.1 kv.), and in 76.9% the treatment was completed after 1 session. Patients who needed more than 1 session received 3,000 to 4,000 shock waves (median 3,000) at 15.0 to 19.0 kv. (median 17.8 kv.) per additional session. Minor complications, such as hematuria, were observed in 33.3% of the patients for less than 24 hours. A small erythematous area usually was present on the abdominal wall at the shock wave entrance site and temporary ileus was noted in 2 patients. In situ extracorporeal shock wave lithotripsy with the Siemens Lithostar device is an effective method for treatment of ureteral stones in all parts of the ureter due to the ease of patient positioning.
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