신결석에서 체외충격파쇄석술 전 요관카테타 유치의 역할

Abstract

Purpose : To ascertain whether insertion of a ureteral stent improves the outcome of renal stones and benefits treated with extracorporeal shock wave lithotripsy(ESWL). Materials and Methods : We retrospectively reviewed the results of ureteral stent use with ESWL in renal calculi. From the August 1995 to June 1997, 45 patients with renal calculi underwent ESWL with or without stents. Patients with renal calculi at least one diameter between 11 and 53mm were eligible for the study. of 45 patients . 30 patients were treated without stents, while 15 patients underwent Double-J stenting before ESWL. Results : There was no significant difference in the stone-free rate in both groups(80% stented group versus 73.3% nonstented group). In renal calculi 25 mm ≤ in diameter, the incidence of ureteral obstruction and pain/renal colic were similar for the two treatment group but voiding symptom was more severe than nonstented group compared with stented group. In renal calculi 25 mm> in diameter, the patients with ureteral stents experienced a significantly lower incidence of flank pain and ureteral obstruction(25%, 37.5% stented group versus 60%, 60% nonstented group) and higher incidence of voiding symptoms(37.5% stented group versus 20% nonstented group). Conclusions: These results suggested that use of an indwelling ureteral stent might not contribute to a higher stone-free for the treatment of renal calculi. But in renal calculi>25 mm in diameter, placement of double-J stent for the purpose of alleviating pain, preventing ureteral obstruction, or in selected cases for example, solitary kidney and aid in stone localization, has a useful adjunctive role in ESWL.