[ESWL treatment of urinary stones at an outpatient clinic]

A total of 107 patients (age: mean 51.6, range 17-85, sex: male 71, female 36) with urinary stones in 112 renoureteral units were subjected to extracorporeal shockwave lithotripsy (ESWL) in situ using an EDAP LT-01 at an outpatient clinic between June 1990 and July 1991. All patients were given an analgesic suppository before ESWL. One ESWL session required 20-60 minutes with a repetition rate of 1.25 Hz, 2.5 Hz or 5 Hz. The effectiveness of the treatment was evaluated in 94 cases consisting of 50 renal units (R1 2, R2 46, R3 2) and 44 ureteral units (U1 16, U2 1, U3 27) three months after the final session according to the criteria reported by Sonoda. Of the 94 cases, 80 cases (85.1%) were stone free and 12 cases (12.8%) had residual fragments of less than 4 mm in diameter. Macroscopic hematuria was seen in all cases. Fever or colicky pain occurred in 3 cases. Outpatient ESWL using the EDAP LT-01 is considered to be safe and efficient for the initial treatment of urinary stones.