A treatment strategy to help select patients who may not need secondary intervention to remove symptomatic ureteral ston
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ORIGINAL ARTICLE
A treatment strategy to help select patients who may not need secondary intervention to remove symptomatic ureteral stones after previous stenting Elena Stojkova Gafner1 · Thomas Grüter1 · Marc A. Furrer1 · Piet Bosshard1 · Bernhard Kiss1 · Mihai D. Vartolomei2 · Beat Roth1,3 Received: 18 October 2019 / Accepted: 6 January 2020 © Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract Purpose This study aimed at evaluating whether removal of the ureteral stent the day before scheduled secondary intervention facilitates spontaneous ureteral stone passage and thus can spare the pre-stented patient this surgery. Methods Retrospective analysis of a single-centre consecutive series of 216 patients after previous stenting due to a symptomatic ureteral stone from 01/2013 to 01/2018. Indwelling stents were removed under local anaesthesia. Patients were told to filter their urine overnight. Multivariate analysis was performed to assess predictive factors for spontaneous stone passage. Results 34% (74/216) of patients had spontaneous stone passage while the stent was indwelling. Of the remaining 142 patients, 41% (58/142) had spontaneous stone passage within 24 h after stent removal. Only 84/216 (39%) patients needed secondary intervention. Multivariate logistic regression analysis of all 216 patients showed a significant association between spontaneous stone passage and smaller stone size (p
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