When they evaluated ureteroscopy they included 6 patients (7 ureters) that failed shock wave lithotripsy and had a total of 14 patients overall 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。

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Ureteral stents are placed to keep the ureters open, especially if there is a risk of their closure due to inflammation.

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