.... The Newcastle-Ottawa Scale (NOS) system was applied for risk of bias assessment. Results: A total of 20 studies including 5,852 patients were involved. 48.5% of the patients had preoperative stent. Stone-free rate was significantly higher with prestenting; odds ratio (OR) was 1.98 (95% CI: 1.51–2.58) (Z = 5.02...

...Xueliang Chang; Yaxuan Wang; Jingdong Li; Zhenwei Han Introduction: The purpose of this article is to evaluate the efficacy and safety of prestenting (PS) versus non-PS (NPS) of flexible ureteroscopy (fURS) to treat large upper urinary stones. Methods: We conducted a systematic literature research...

...Han Chen; Gang Chen; Yunxiao Zhu; Ziyi Yang; Chaoyu Xiong; Yang Pan Objectives: The aim of this study is to explore the efficacy and safety of flexible ureteroscopy (fURS) with prestenting (PS) for patients and a newly starting department. Method: The data of patients who underwent fURS for calculi...