Evaluation of urinary enzyme levels after piezoelectric extracorporeal shock wave lithotripsy for renal stones / 대한비뇨기과학회지

ABSTRACT

Among the patients who underwent piezoelectric extracorporeal shock wave lithotripsy (ESWL) for renal stone between September l99l and December 1991, 20 patients non-selectively participated in this study. Of 20 patients 9 had renal pelvis stones and II had calyceal stones, and all received 45 average storage or shock waves. The changes of NAG, GOT. GPT, LDH, ALP, r-GTP in the blood and 24-hour urine were measured as a marker of renal damage before and after the first session of ESWL treatment. Serum levels of these enzymes did not appear to change with ESWL. As for the changes in the total volume and concentration of these enzymes in 24-hour urine. all 6 enzymes tended to increase though not significantly but the NAG significantly increased after ESWL. Therefore. these data suggest that the evaluation of urinary enzyme levels is an economic, rapid applicable diagnostic method after ESWL of renal stone. Especially. the urinary NAG assay is to be a brief screening test prior to radiographical study.