Clinical Experience of Extracorporeal Shock Wave Lithotripsy with Modulith SLK in 440 Urinary Calculi

Song, Sung Ho; Lee, Seung Bae; Kim, Dae Kyung

Abstract

PURPOSE: We describe our clinical experience of extracorporeal shock wave lithotripsy (SWL) using Modulith SLK in 440 cases of urinary calculi.
MATERIALS AND METHODS
The records of 440 cases of urinary stones treated by Modulith SLK lithotriptor, from October, 2002 to June, 2004, were reviewed retrospectively. The size and location of stones, number of sessions, auxiliary procedures, success rate and complications were statistically analysed.
RESULTS
The total success rate was 95.7% (421/440 cases), and according to stone location was 98.2% in the kidney and 94.1% in the ureter. The success rate according to stone size was 97.1%, 91.1%, 92.9% and 80% for below 10mm, 11-20mm, 21-30mm and over 30mm, respectively. The success rate within 3 sessions was 82.7%. The average number of treatment session was 2.14. The complications after SWL were gross hematuria in 316 cases (71.8%), renal colic in 83 (18.9%), steinstrasse in 19 (4.3%), and fever in 2 (0.5%). All of the complications were controlled by conservative management only. As an auxiliary procedure, double J stent insertion was done in 22 cases, percutaneous nephrostomy (PCN) in 1, ureteroscopic removal of stone (URS) in 15, percutaneous nephrolithotomy (PNL) in 3, and ureterolithotomy in 1.
CONCLUSIONS
Modulith SLK lithotriptor is considered to be an effective and safe tool for the first line treatment of urinary calculi.