In situ Piezoelectric ESWL for ureteric calculi
Keywords:Ureteral Calculi. Lithotripsy. Kidney Calculi. Ureter. Ureteral Obstruction. Urologic Diseases. Efficiency. Prospective Studies. Pyelonephritis.
Objective: To assess in situ Piezoelectric ESWL for ureteric calculi, avoiding false positive results arising from the spontaneous passage of small stones and also to evaluate the efficiency of the EDAP LT02 Lithotriptor for insitu ESWL treatment of ureteric calculi. Study Design: A prospective evaluation of patients with ureteric calculi treated with Piezoelectric ESWL using EDAP LT 02 Lithotriptor. Place & Duration of Study: patients with ureteric calculi treated with Piezoelectric ESWL using EDAP LT 02 Lithotriptor for a period of twelve months, coming to Urology department of Pakistan Institute of Medical Sciences (PIMS), Islamabad, as out door patients. Patients and methods: A prospective evaluation of patients with ureteric calculi treated with Piezoelectric ESWL using EDAP LT 02 Lithotriptor for a period of twelve months, Seventy two patients, 60 males and 12 females, with mean age of 39.6 years, presenting with solitary ureteric calculus were treated using EDAP LT 02 Piezoelectric Lithotriptor, lo calization with fluoroscopy. No regional or general anesthesia given. Results: After 3 months follow-up, of the 72 ureteric calculi cases, 60(83.3%) were successfully fragmented and ureter was stone free in 54 patients (75.1%) after insitu ESWL alone. The mean duration of stone clearance was 50 days (SD +11.58). Sixteen patients required one session only, 28 patients required 2 sessions and twelve patients required three and more than three sessions. Stone location was 28 upper ureteric, 18 middle and 26 in lower ureter. Stone size varied from 7mm.to 17mm. in longest diameter. The average number of session, 1.5 for upper ureteric stone, 1.8 for mid and lower ureteric stones. Stone clearance for upper ureteric calculus was 85.7%, for mid ureteric 66.7% & for lower ureteric 69%, the overall stone clearance was 75%. Conclusion: In situ piezoelectric ESWL is safe, simple and effective technique for treating ureteric calculi. The site and size of the stone affects the success rate.
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