Inclusion Criteria:  Clinical diagnosis of unilateral ureteral stone Plan to undergo unilateral URS lithotripsy Adult patients (>18 years old)  Exclusion Criteria:  Pre-stented cases Distal ureteral stones Preoperative urinary tract infection With medications known to influence stent-related symptoms, including alpha-blockers, antimuscarinics, beta3-agonist Pregnancy Other procedures required during the procedure of lithotripsy A stent was expected to be indwelled for more than 10 days (ureteral stricture, ureteral tumors/polyps, ureteral trauma, and a large amount of stone fragments)