{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,1]],"date-time":"2026-09-01T07:07:32Z","timestamp":1788246452941,"version":"build-2803163510"},"reference-count":0,"publisher":"PAGEPress Publications","issue":"1","license":[{"start":{"date-parts":[[2018,3,31]],"date-time":"2018-03-31T00:00:00Z","timestamp":1522454400000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Arch Ital Urol Androl"],"abstract":"<jats:p>Objective: To evaluate ureteral compliance through semirigid ureteroscopy (sURS) in order to select the proper ureteral access sheath (UAS) size for retrograde intrarenal surgery (RIRS). Patients and methods: In a prospective study, 100 consecutive patients selected for elective sURS or RIRS were recruited. Each patient, initially underwent 9.5 Fr sURS with a safety guidewire 3Fr, in order to estimate ureteral compliance. If the ureter was compliant, a gently passage of a 12\/14Fr UAS was attempted. If the ureter was not deemed compliant, passage of either a smaller UAS or a smaller semirigid 7Fr or a flexible 7.5Fr or a digital 8.5Fr scope with and without safety guidewire, was attempted. Age, gender, disease location, prestenting, previous RIRS and\/or stone elimination, hydronephrosis, ureteral strictures, unsuccessful procedures, and complications, were analyzed as possible correlated factors of ureteral compliance. Results: In 77 patients the ureter was deemed compliant \u2265 14Fr. Of the preoperative factors that were examined, stent placement before RIRS (P &lt; 0.002), previous RIRS (P = 0.000) and previous stone elimination (P = 0.004), correlated with ureter \u2265 14Fr. Ureteral lithiasis (P &lt; 0.001), ureteral strictures (P &lt; 0.05), unsuccessful procedures (P &lt; 0.005) and complications (P = 0.01) correlated with ureter &lt; 14Fr. The complication rate was 10% (10 patients) with ureteral injuries grade I in 9 patients and grade III in 1 patient according to the endoscopic grading system. Age, gender, hydronephrosis and urothelial carcinoma (UC) had no influence. Conclusions: sURS performed before RIRS allows selection of the right ureteral access sheath (UAS) and avoidance of major complications. Pre-stenting, previous RIRS and stone elimination history are all factors correlating with a compliant ureter.<\/jats:p>","DOI":"10.4081\/aiua.2018.1.20","type":"journal-article","created":{"date-parts":[[2018,4,10]],"date-time":"2018-04-10T12:55:37Z","timestamp":1523364937000},"page":"20","source":"Crossref","is-referenced-by-count":11,"title":["Semirigid ureteroscopy prior retrograde intrarenal surgery (RIRS) helps to select the right ureteral access sheath"],"prefix":"10.4081","volume":"90","author":[{"given":"Ioannis","family":"Boulalas","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mauro","family":"De Dominicis","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lorenzo","family":"Defidio","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"2549","published-online":{"date-parts":[[2018,3,31]]},"container-title":["Archivio Italiano di Urologia e Andrologia"],"original-title":[],"link":[{"URL":"http:\/\/www.pagepressjournals.org\/index.php\/aiua\/article\/viewFile\/7181\/7108","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/www.pagepressjournals.org\/index.php\/aiua\/article\/viewFile\/7181\/7108","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2018,4,10]],"date-time":"2018-04-10T12:56:07Z","timestamp":1523364967000},"score":1,"resource":{"primary":{"URL":"http:\/\/www.pagepressjournals.org\/index.php\/aiua\/article\/view\/aiua.2018.1.20"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2018,3,31]]},"references-count":0,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2018,3,31]]}},"URL":"https:\/\/doi.org\/10.4081\/aiua.2018.1.20","relation":{},"ISSN":["2282-4197","1124-3562"],"issn-type":[{"value":"2282-4197","type":"electronic"},{"value":"1124-3562","type":"print"}],"subject":[],"published":{"date-parts":[[2018,3,31]]}}}