Abstract
Background: Ureteroscopy (URS) is a widely utilized procedure for the management of urinary stones, though failed access due to ureteral orifice tightness or spasms can be a potential outcome. Silodosin, an alpha-1A adrenergic receptor antagonist, has shown promise in recent randomized controlled trials (RCTs) in improving URS outcomes by relaxing ureteral smooth muscle. Objective: This systematic review and meta-analysis aims to determine whether preoperative administration of silodosin enhances ureteroscopy outcomes, including ureteral access rates, operative time, complication rates, and stone-free rates. Methods: After PROSPERO registration, a comprehensive search of PubMed, EMBASE, and the Cochrane Library was conducted for RCTs comparing silodosin with placebo or no medication before URS. Data extraction and bias assessment were performed independently by two reviewers. Statistical analysis was undertaken by Review Manager V5.4, employing random-effects models for heterogeneous variables. Results: Eight RCTs with a total of 892 patients (416 in the silodosin group and 476 in the control group) met the inclusion criteria. Silodosin significantly reduced operative time by 15.74 minutes (p < 0.00001). The access rate was higher in the silodosin group (96.9%) compared with the control group (87.2%)(p = 0.0004). Total complication rates were lower in the silodosin group (14.39% vs 27.47%, p < 0.00001), as were moderate to significant complications (5.0% vs 11.7%, p = 0.003). Stone-free rates were also higher in the silodosin group (92.16% vs 81.5%, p < 0.0001). Conclusion: Preoperative administration of silodosin significantly improves URS outcomes by reducing operative time, increasing access rates, decreasing complication rates, and enhancing stone-free rates. These findings support the integration of silodosin into clinical practice guidelines for URS, potentially improving procedural efficiency and patient outcomes.
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