{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,14]],"date-time":"2026-09-14T20:15:09Z","timestamp":1789416909247,"version":"build-2803163510"},"reference-count":20,"publisher":"Springer Science and Business Media LLC","issue":"1","license":[{"start":{"date-parts":[[2024,3,13]],"date-time":"2024-03-13T00:00:00Z","timestamp":1710288000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2024,3,13]],"date-time":"2024-03-13T00:00:00Z","timestamp":1710288000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"funder":[{"DOI":"10.13039\/100012352","name":"Universit\u00e0 degli Studi di Milano","doi-asserted-by":"crossref","id":[{"id":"10.13039\/100012352","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["World J Urol"],"abstract":"<jats:title>Abstract<\/jats:title><jats:sec>\n                <jats:title>Purpose<\/jats:title>\n                <jats:p>To evaluate the rate of and predictors of ureteral obstruction after mini-percutaneous nephrolithotomy (mPCNL) for kidney stones.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Methods<\/jats:title>\n                <jats:p>We analyzed data from 263 consecutive patients who underwent mPCNL at a single tertiary referral academic between 01\/2016 and 11\/2022. Patient\u2019s demographics, stone characteristics, and operative data were collected. A nephrostomy tube was placed as the only exit strategy in each procedure. On postoperative day 2, an antegrade pyelography was performed to assess ureteral canalization. The nephrostomy tube was removed if ureteral canalization was successful. Descriptive statistics and logistic regression models were used to identify factors associated with a lack of ureteral canalization.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>Overall, median (IQR) age and stone volume were 56 (47\u201365) years and 1.7 (0.8\u20134.2) cm<jats:sup>3<\/jats:sup>, respectively. Of 263, 55 (20.9%) patients showed ureteral obstruction during pyelography. Patients without ureteral canalization had larger stone volume (<jats:italic>p<\/jats:italic>\u2009&lt;\u20090.001), longer operative time (<jats:italic>p<\/jats:italic>\u2009&lt;\u20090.01), and higher rate of stones in the renal pelvis (<jats:italic>p<\/jats:italic>\u2009&lt;\u20090.01) than those with normal pyelography. Length of stay was longer (<jats:italic>p<\/jats:italic>\u2009&lt;\u20090.01), and postoperative complications (<jats:italic>p<\/jats:italic>\u2009=\u20090.03) were more frequent in patients without ureteral canalization. Multivariable logistic regression analysis revealed that stone volume (OR 1.1, <jats:italic>p<\/jats:italic>\u2009=\u20090.02) and stone located in the renal pelvis (OR 2.2, <jats:italic>p<\/jats:italic>\u2009=\u20090.04) were independent predictors of transient ureteral obstruction, after accounting for operative time.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusion<\/jats:title>\n                <jats:p>One out of five patients showed transient ureteral obstruction after mPCNL. Patients with a higher stone burden and with stones in the renal pelvis are at higher risk of inadequate ureteral canalization. Internal drainage might be considered in these cases to avoid potential complications.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1007\/s00345-024-04832-6","type":"journal-article","created":{"date-parts":[[2024,3,13]],"date-time":"2024-03-13T20:33:49Z","timestamp":1710362029000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Transient ureteral obstruction after mini-percutaneous nephrolithotomy is associated with stone volume and location: results from a single-center, real-life study"],"prefix":"10.1007","volume":"42","author":[{"given":"Marco","family":"Nizzardo","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stefano Paolo","family":"Zanetti","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andrea","family":"Marmiroli","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gianpaolo","family":"Lucignani","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Matteo","family":"Turetti","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Carlo","family":"Silvani","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Franco","family":"Gadda","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fabrizio","family":"Longo","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Elisa","family":"De Lorenzis","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1979-3437","authenticated-orcid":false,"given":"Giancarlo","family":"Albo","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andrea","family":"Salonia","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Emanuele","family":"Montanari","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Luca","family":"Boeri","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2024,3,13]]},"reference":[{"issue":"2","key":"4832_CR1","doi-asserted-by":"publisher","first-page":"16008","DOI":"10.1038\/nrdp.2016.8","volume":"25","author":"SR Khan","year":"2016","unstructured":"Khan SR, Pearle MS, Robertson WG, Gambaro G, Canales BK, Doizi S et al (2016) Kidney stones. 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Ethical approval was waived by the Foundation IRCCS Ca\u2019 Granda\u2014Ospedale Maggiore Policlinico Ethical Committee in view of the retrospective nature of the study, and all the procedures being performed were part of the routine care. All patients signed an informed consent agreeing to share their own anonymous information for future studies.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethics approval"}}],"article-number":"146"}}