{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,9]],"date-time":"2026-10-09T23:51:53Z","timestamp":1791589913221,"version":"4.3.4"},"reference-count":15,"publisher":"SAGE Publications","issue":"11","license":[{"start":{"date-parts":[[2026,8,24]],"date-time":"2026-08-24T00:00:00Z","timestamp":1787529600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Journal of Endourology"],"published-print":{"date-parts":[[2026,11,1]]},"abstract":"<jats:sec>\n                    <jats:title>Objective:<\/jats:title>\n                    <jats:p>To compare the efficacy and safety of the flexible and navigable suction ureteral access sheath (FANS-UAS) against the conventional ureteral access sheath (CUAS) in retrograde intrarenal surgery (RIRS).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Materials and Methods:<\/jats:title>\n                    <jats:p>A total of 161 patients who underwent RIRS at seven centers using similar surgical methods (thulium fiber laser and 7.5 F disposable flexible ureterorenoscope) were prospectively enrolled in the study between May 2024 and September 2025. The patients were randomized into two groups based on the use of UAS (Group 1: CUAS; Group 2: FANS-UAS). Demographic and clinical data of the patients, stone characteristics, surgical data, perioperative and postoperative complications, duration of hospitalization, and stone-free rates (SFRs) were analyzed for comparison.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>\n                      Of the 161 patients included in the study, 79 received a CUAS and 82 received a FANS-UAS. The groups were demographically similar (\n                      <jats:italic toggle=\"yes\">p<\/jats:italic>\n                      &gt; 0.05). The postoperative SFR at 1 month was statistically significantly higher in the FANS-UAS group (79.3%\n                      <jats:italic toggle=\"yes\">vs<\/jats:italic>\n                      63.3%,\n                      <jats:italic toggle=\"yes\">p<\/jats:italic>\n                      = 0.041), and the operative time was shorter in the CUAS group (\n                      <jats:italic toggle=\"yes\">p<\/jats:italic>\n                      = 0.011). The perioperative bleeding rate was higher in the FANS-UAS group (\n                      <jats:italic toggle=\"yes\">p<\/jats:italic>\n                      = 0.034), although there was no significant difference in postoperative hemoglobin decrease. No significant difference was observed between the two groups in terms of postoperative complications (\n                      <jats:italic toggle=\"yes\">p<\/jats:italic>\n                      = 0.162).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion:<\/jats:title>\n                    <jats:p>The FANS-UAS is an effective method that increases SFR compared to the CUAS. Although the FANS-UAS prolongs operation time and increases perioperative bleeding, both FANS-UAS and the CUAS are similarly safe in terms of postoperative complications.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/08927790261480580","type":"journal-article","created":{"date-parts":[[2026,8,24]],"date-time":"2026-08-24T12:31:06Z","timestamp":1787574666000},"page":"1183-1189","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":0,"title":["Comparison of Flexible and Navigable Suction Versus Conventional Ureteral Sheath\u00a0in Retrograde Intrarenal Surgery: A Randomized Controlled Prospective RIRSearch Group Study"],"prefix":"10.1177","volume":"40","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0926-3005","authenticated-orcid":false,"given":"Mehmet Fatih","family":"\u015eahin","sequence":"first","affiliation":[{"name":"Department of Urology, Tekirdag Nam\u0131k Kemal University, Tekirdag, Turkey."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"\u00c7a\u011fr\u0131","family":"Do\u011fan","sequence":"additional","affiliation":[{"name":"Department of Urology, Tekirdag Nam\u0131k Kemal University, Tekirdag, Turkey."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kerem","family":"Teke","sequence":"additional","affiliation":[{"name":"Department of Urology, Kocaeli University, Kocaeli, Turkey."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Muhammed Fatih","family":"\u015eim\u015feko\u011flu","sequence":"additional","affiliation":[{"name":"Department of Urology, Cerrahpa\u015fa Faculty of Medicine, \u0130stanbul, Turkey."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mustafa Bilal","family":"Tuna","sequence":"additional","affiliation":[{"name":"Urology Clinic \u0130stanbul, Maslak Ac\u0131badem Hospital, Istanbul, Turkey."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Oktay","family":"\u00d6zman","sequence":"additional","affiliation":[{"name":"Urology Clinic, Memorial Healthcare Group, Istanbul, Turkey."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hakan","family":"\u00c7ak\u0131r","sequence":"additional","affiliation":[{"name":"Urology Clinic, Fulya Ac\u0131badem Hospital, \u0130stanbul, Turkey."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Cem","family":"Ba\u015fata\u00e7","sequence":"additional","affiliation":[{"name":"Department of Urology, Demiro\u011flu Bilim University, \u0130stanbul, Turkey."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"\u00d6nder","family":"\u00c7\u0131nar","sequence":"additional","affiliation":[{"name":"Urology Clinic, Medicana International, Samsun, Turkey."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Murat","family":"Akg\u00fcl","sequence":"additional","affiliation":[{"name":"Department of Urology, \u00dcmraniye Tranining and Research Hospital, \u0130stanbul, Turkey."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Duygu","family":"S\u0131dd\u0131ko\u011flu","sequence":"additional","affiliation":[{"name":"Department of Biostatistics, \u00c7anakkale Onsekiz Mart University, \u00c7anakkale, Turkey."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Cenk Murat","family":"Yaz\u0131c\u0131","sequence":"additional","affiliation":[{"name":"Department of Urology, Tekirdag Nam\u0131k Kemal University, Tekirdag, Turkey."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ey\u00fcp Burak","family":"Sancak","sequence":"additional","affiliation":[{"name":"Department of Urology, \u00c7anakkale Onsekiz Mart University, \u00c7anakkale, Turkey."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Barbaros","family":"Ba\u015feskio\u011flu","sequence":"additional","affiliation":[{"name":"Urology Clinic, Uroloji Eskisehir, Eskisehir, Turkey."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Haluk","family":"Akp\u0131nar","sequence":"additional","affiliation":[{"name":"Department of Urology, Group Florence Nightingale Hospitals, \u0130stanbul, Turkey."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"B\u00fclent","family":"\u00d6nal","sequence":"additional","affiliation":[{"name":"Department of Urology, Cerrahpa\u015fa Faculty of Medicine, \u0130stanbul, 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