Upper urinary tract calculi
ProcedureGroup A (Tubeless Group): No Double-J stent is placed after confirming no severe injury or significant residual calculi upon surgery completion. Postoperative routine anti-inflammatory treatment and fluid infusion are administered.
Group B (1-Week Stent Group): A 4.7Fr or 6Fr Double-J stent is indwelled postoperatively. Stent removal is performed via outpatient cystoscopy at postoperative day 7 (±1 day).
Group C (2-Week Stent Group): The same type of Double-J stent is indwelled postoperatively. Stent removal is performed via outpatient cystoscopy at postoperative day 14 (±2 days).
Standardization: All operations are performed by the same team of senior attending physicians with identical brand laser devices and stents. Perioperative medication regimens are consistent across all groups.
Other names: Double-J stent indwelling for 1 week postoperatively, Double-J stent indwelling for 2 weeks postoperatively