When they ealuated ureteroscopy they included 6 patients (7 ureters) that failed shock wae lithotripsy and had a total of 14 patients oerall who underwent ureteroscopy for lower ureteral calculi.

• 当评价输尿管镜检查术时，纳入了6名冲击波碎石术失败患者（7条输尿管），总共有14名患者对输尿管下部结石进行输尿管镜检查术治疗。