Objective:Evaluate the relationship of complications and indwelling time of double-J ureteral stents after ureterscopic holmium-laser lithotripsy. Methods:170 patients were divided into two groups randomly. groupⅠ(stents indwelling 4 weeks)

groupⅡ(stents indwelling 2 weeks).Complications of two groups were compared. Results:During the indwelling time

two groups presented urinary irritative sypmtoms were 81(93%)and 51(61%)P<0.01

infection were 71(82%)and 39(47%)P<0.01

flank pain were 26 (30%)and 10(12%)P<0.05

encrustation were 23(26%)and 9(11%)

P<0.01 respectively

hemaurine were both 100% in two groups. Two weeks after removing the Double-J stents

urinary irritative sypmtoms were 3 (3.4%)and 2 (2.4%)

microscopic hematuria were9 (10%)and 6(7%)

infection were 7(8%)and 3(4%)

flank pain were 0 in two groups

there were no significant statistically differences between the two groups. Conclusion:For the patients who received ureterscopic holmium-laser lithotripsy

shortening indwelling time could be safe and decrease urinary irritative sypmtoms

hemaurine

infection and flank pain.