Analysis of the clinical efficacy and safety of modified ureteroscopic holmium laser lithotripsy in the treatment of middle and lower ureteral stones

ObjectiveTo explore the clinical efficacy and safety of modified ureteroscopic holmium laser lithotripsy in the treatment of middle and lower ureteral stones.

MethodsThe clinical data of 119 patients with middle and lower ureteral stones were retrospectively analyzed.Sixty cases were treated with conventional ureteroscopic holmium laser lithotripsy(conventional group), and 59 cases were treated with modified ureteroscopic holmium laser lithotripsy(modified group).The success rate of one-time endoscopic entry, endoscopic entry time, total operation time, clearance rate of stone and complications were compared between two groups.

ResultsThe success rates of one-time endoscopic entry in the conventional group and modified group were 83.3% and 96.6%, respectively, and the difference of which was statistically significant(P < 0.05).The endoscopic entry time in modified group was shorter than that in conventional group(P < 0.05), and the total operation time in modified group was significantly lower than that in conventional group(P < 0.01).The stone clearance rate in the conventional group and modified group after 4 weeks of operation were 81.7% and 96.6%, respectively, and the difference of which was statistically significant(P < 0.01).The incidence rate of postoperative complications was not statistically significant between two groups(P>0.05).

ConclusionsThe modified ureteroscopic holmium laser lithotripsy can effectively prevent the upward movement of stone through adjusting the way of endoscopic entry, controlling the energy and frequency of gravel and adjusting the inlet pressure and speed to facilitate the removal of stone, reduce the total operation time, not improve incidence rate of complications, and further improve the operation effect and safety, which is worthy of promotion in clinic.