CLINICAL EXPERIENCE WITH EXTRACORPOREAL SHOCK WAVE LITHOTRIPSY USING DORNIER MFL 5000 FOR UPPER URINARY TRACT CALCULI

Abstract

For 36 (37 stones) patients with upper urinary calculi, 41 extracorporeal shock wave lithotripsies (ESWL) were performed using the Dornier MFL 5000. Of these cases, 8 (9 stones) patients had renal calculi and the remaining 28 patients had a ureteral calculus. As for the treatment number, 34 cases received single treatment, 2 cases twice and 1 case 4 times.Two patients received epidural anesthesia and the remainder received analgesic suppositories to suppress treatment induced pain. In order to accurately detect the location of the stone, ultrasound was selected as the method for 2 treatments, while fluoroscopic imaging was selected for 39 treatments. Average shock wave number per treatment was 3055 shots, and the average treatment time was 98 minutes. Auxiliary procedures before ESWL were required in 9 patients : four insertion ureteral catheter, one indwelling J stent, three saline infusions to the urinary bladder, and one nephrostography.The overall success rate (stone free and residual fragments less than 4 mm, 1 month after ESWL) was 89.2%, and the rates were 88.9% for renal calculi and 89.3% for ureteral calculus. As for complications, slight hematuria occurred in 80% of 41 treatments.ESWL, using a Dornier MFL 5000, were considered to be safe and effective.