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Exclusion criteria encompassed pediatric cases, individuals with untreated coagulopathies, and those with stones in calyceal diverticula.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      A significant difference was observed in the distribution of stone-free rates (SFRs) between the groups, with the FANS group demonstrating a elevated grade A (absolute stone-free) rate and fewer grade C (2.1 to 4\u00a0mm residual stones) as opposed to the TUAS one (70% vs. 20%, and 6% vs. 48%,\n                      <jats:italic>p<\/jats:italic>\n                      \u2009&lt;\u20090.001). Additionally, the operative time was significantly longer in the TUAS group (58.4\u2009\u00b1\u200914.53\u00a0min) as opposed to the FANS group (48.41\u2009\u00b1\u200913.9\u00a0min,\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.001). The infection rate was also significantly elevated in the TUAS group (16%) as opposed to the FANS group (4%,\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.046). In terms of intraoperative and postoperative adverse events, the groups were similar (\n                      <jats:italic>p<\/jats:italic>\n                      \u2009&lt;\u20090.05).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>FANS emerges as a promising and safer approach for bilateral flexible ureteroscopy, offering superior SFRs, faster procedure times, and fewer infections when as opposed to the traditional TUAS approach.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1007\/s00345-025-06126-x","type":"journal-article","created":{"date-parts":[[2025,12,25]],"date-time":"2025-12-25T16:33:57Z","timestamp":1766680437000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Efficacy and safety of bilateral same session flexible ureteroscopy using flexible and navigable suction ureteral access sheath (FANS) versus conventional access sheath: a prospective randomized comparative study"],"prefix":"10.1007","volume":"44","author":[{"ORCID":"https:\/\/orcid.org\/0009-0009-1417-2261","authenticated-orcid":false,"given":"Helmy","family":"Eldib","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Moaz","family":"Abdelrahman","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8336-2802","authenticated-orcid":false,"given":"Islam","family":"Nouh","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7378-545X","authenticated-orcid":false,"given":"Mahmoud","family":"Mobarak","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0009-7289-8802","authenticated-orcid":false,"given":"Mahmoud","family":"Farag","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2025,12,25]]},"reference":[{"key":"#cr-split#-6126_CR1.1","doi-asserted-by":"crossref","unstructured":"Lee SLJ, Koh LT, Ng KK, Ng FC (2012) Incidence of Computed Tomography (CT) detected urolithiasis","DOI":"10.1016\/S1569-9056(13)60803-9"},{"key":"#cr-split#-6126_CR1.2","unstructured":"Available from: http:\/\/www.esdconference.com\/ESD2012\/pdf\/POSTERS\/PP-081.pdf [cited 2017, Apr 5]"},{"key":"6126_CR2","doi-asserted-by":"publisher","unstructured":"Geraghty RM, Jones P, Somani BK (2017) Jun;31(6):547\u2013556 Worldwide Trends of Urinary Stone Disease Treatment Over the Last Two Decades: A Systematic Review. 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