中文摘要：

目的探讨单发输尿管结石经输尿管镜气压弹道碎石术后发生狭窄的危险因素。方法收集2012年1月至2013年10月就诊于我院首次行经尿道输尿管镜气压弹道碎石（URSL）治疗的单发输尿管结石患者的临床资料,先行单因素分析,然后对有统计学意义指标行Logistic多因素回归分析。结果共收集行URSL的单发输尿管结石患者206例,其中狭窄患者22例,狭窄率为10.68%,单因素分析显示：与术后狭窄有关因素为结石大小、息肉包绕结石、肾积水程度、脓毒症以及手术时间,多因素Logistic回归分析示：术后输尿管狭窄主要与结石大小、肾积水程度以及息肉包绕结石因素有关。结论输尿管镜气压弹道碎石后发生狭窄者多为积水较重、结石较大、息肉包绕结石患者。

英文摘要：

Objective To investigate the risk factors of solitary ureteral stenosis in patients with ureteral calculi treated by transurethral ureteroscopic pneumatic ballistic lithotripsy（URSL）.Methods The clinical data of patients with ureteral calculi who received URSL therapy the first time in our hospital during Jan.2012 and Nov.2013 were collected,and analyzed with univariate analysis and logistic multivariate regression.Results A total of 206 patients were involved,including 22 ureteral stenosis cases after URSL therapy（10.68%）.Univariate analysis showed that the diameter of stone,degree of hydronephrosis,time of operation,stones complicated with ureteric polyps,and sepsis were associated with stricture of ureteral after URSL.Logistic regression analysis indicated that the diameter of stone,degree of hydronephrosis and ureteric polyps were the risk factors.Conclusion Patients with ureteral stones of large diameter,complicated with severe hydronephrosis or ureteric polyps are more likely to develop ureteral stenosis after URSL.