| Objective To investigate the differences of clinical efficacy of ureteroscopic lithotripsy (URL) at different time points after renal colic in the treatment of middle-lower ureteral calculi. Methods From Jan 2012 to Sep 2015, ninety-eight patients with middle-lower ureteral calculi underwent URL therapy in our hospital, and according to the URL implementing period after their first episode of ureteric colic, they were divided into group A (50 patients, within 14 days) and group B (48 patients, more than 14 days). The operation time, preoperative infection incidence examined by urine analysis and urine culture, first-time stone clearance rate, occurrence rate of ureter polyp, and removal rate of double-J tube at 2 weeks after operation were compared between the two groups. Results The operation time of group B was significantly longer than that of group A (48.60±7.84 min vs 38.23±5.35 min, P<0.05). The preoperative infection incidence tested by urine analysis and the occurrence rate of ureter polyp of group B were significantly higher than those of group A (P<0.05), but the removal rate of double-J tube of group B at 2 weeks after operation was significantly lower than that of group A (P<0.05). Conclusion Application of URL therapy in the treatment of middle-lower ureteral calculi within 14 days after first episode of renal colic could efficiently shorten operation time and indwelling time of double-J tube after operation, and reduce the occurrence of preoperative urine infection and ureter polyp. |
