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Platinum Priority – Stone Disease Editorial by Philipp Dahm, Shyam Sukumar and John M. Hollingsworth on pp. 392–393 of this issue| Volume 73, ISSUE 3, P385-391, March 01, 2018

Efficacy and Safety of Tamsulosin in Medical Expulsive Therapy for Distal Ureteral Stones with Renal Colic: A Multicenter, Randomized, Double-blind, Placebo-controlled Trial

Published:November 11, 2017DOI:https://doi.org/10.1016/j.eururo.2017.10.033

      Abstract

      Background

      Recent large high-quality trials have questioned the clinical effectiveness of medical expulsive therapy using tamsulosin for ureteral stones.

      Objective

      To evaluate the efficacy and safety of tamsulosin for distal ureteral stones compared with placebo.

      Design, setting, and participants

      We conducted a double-blind, placebo-controlled study of 3296 patients with distal ureteral stones, across 30 centers, to evaluate the efficacy and safety of tamsulosin.

      Intervention

      Participants were randomly assigned (1:1) into tamsulosin (0.4 mg) or placebo groups for 4 wk.

      Outcome measurements and statistical analysis

      The primary end point of analysis was the overall stone expulsion rate, defined as stone expulsion, confirmed by negative findings on computed tomography, over a 28-d surveillance period. Secondary end points included time to stone expulsion, use of analgesics, and incidence of adverse events.

      Results and limitations

      Among 3450 patients randomized between September 1, 2011, and August 31, 2013, 3296 (96%) were included in the primary analysis. Tamsulosin benefits from a higher stone expulsion rate than the placebo (86% vs 79%; p < 0.001) for distal ureteral stones. Subgroup analysis identified a specific benefit of tamsulosin for the treatment of large distal ureteral stones (>5 mm). Considering the secondary end points, tamsulosin-treated patients reported a shorter time to expulsion (p < 0.001), required lower use of analgesics compared with placebo (p < 0.001), and significantly relieved renal colic (p < 0.001). No differences in the incidence of adverse events were identified between the two groups.

      Conclusions

      Our data suggest that tamsulosin use benefits distal ureteral stones in facilitating stone passage and relieving renal colic. Subgroup analyses find that tamsulosin provides a superior expulsion rate for stones >5 mm, but no effect for stones ≤5 mm.

      Patient summary

      In this report, we looked at the efficacy and safety of tamsulosin for the treatment of distal ureteral stones. We find that tamsulosin significantly facilitates the passage of distal ureteral stones and relieves renal colic.

      Keywords

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