{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,3]],"date-time":"2026-09-03T06:13:20Z","timestamp":1788416000482,"version":"build-2803163510"},"reference-count":28,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2026,9,3]],"date-time":"2026-09-03T00:00:00Z","timestamp":1788393600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Med."],"abstract":"\n Objective<\/jats:title>\n To evaluate the clinical efficacy and safety of a modified Galdakao-modified supine Valdivia (GMSV) position combined with a flexible and navigable suction ureteral access sheath (FANS-UAS) in intelligent pressure-controlled retrograde intrarenal surgery (IPC-RIRS) for the treatment of renal calculi.<\/jats:p>\n <\/jats:sec>\n \n Methods<\/jats:title>\n \n This single-center retrospective cohort study included 158 patients with renal calculi who underwent FANS-UAS-assisted IPC-RIRS between June 2023 and June 2025. Patients were categorized into the GMSV position group (\n n<\/jats:italic>\n \u2009=\u200978) and conventional lithotomy position group (\n n<\/jats:italic>\n \u2009=\u200980) according to the intraoperative position used. Operative time, positioning time, stone retrieval basket use, postoperative hospital stay, stone-free rate (SFR) on postoperative day 1 and day 30, reoperation rate, and perioperative complications were compared between groups.\n <\/jats:p>\n <\/jats:sec>\n \n Results<\/jats:title>\n \n Operative time was significantly shorter in the GMSV group than in the lithotomy group (41.35\u2009\u00b1\u20097.32\u2005min vs. 55.21\u2009\u00b1\u20098.25\u2005min,\n P<\/jats:italic>\n \u2009&lt;\u20090.001). Stone retrieval baskets were required in fewer patients in the GMSV group than in the lithotomy group (3.85% vs. 12.50%,\n P<\/jats:italic>\n \u2009=\u20090.048). The SFRs on postoperative day 1 were 87.18% and 73.75% in the GMSV and lithotomy groups, respectively, while the corresponding SFRs on postoperative day 30 were 92.31% and 81.25%, respectively. The GMSV group achieved significantly higher SFRs at both time points (both\n P<\/jats:italic>\n \u2009&lt;\u20090.05). No significant differences were observed between groups in positioning time, postoperative hospital stay, postoperative hemoglobin decrease, reoperation rate, or perioperative complication rate (all\n P<\/jats:italic>\n \u2009&gt;\u20090.05).\n <\/jats:p>\n <\/jats:sec>\n \n Conclusion<\/jats:title>\n The GMSV position, combined with FANS-UAS-assisted IPC-RIRS, significantly improved the SFR and reduced operative time, while providing similar safety and positioning efficiency compared with the lithotomy position.<\/jats:p>\n <\/jats:sec>","DOI":"10.3389\/fmed.2026.1886784","type":"journal-article","created":{"date-parts":[[2026,9,3]],"date-time":"2026-09-03T05:21:49Z","timestamp":1788412909000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":0,"title":["Clinical efficacy of the Galdakao-modified supine Valdivia position vs. the lithotomy position in FANS-UAS-assisted IPC-RIRS for renal calculi"],"prefix":"10.3389","volume":"13","author":[{"given":"Qiuhua","family":"Zhu","sequence":"first","affiliation":[{"name":"Department of Operating Room, Ganzhou People\u2019s Hospital, Jiangxi Medical College, Nanchang University","place":["Ganzhou, Jiangxi, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yunxia","family":"Cai","sequence":"additional","affiliation":[{"name":"Department of Operating Room, Ganzhou People\u2019s Hospital, Jiangxi Medical College, Nanchang University","place":["Ganzhou, Jiangxi, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"An","family":"Wang","sequence":"additional","affiliation":[{"name":"Department of Urology, Ganzhou People\u2019s Hospital, Jiangxi Medical College, Nanchang University","place":["Ganzhou, Jiangxi, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jiansheng","family":"Xiao","sequence":"additional","affiliation":[{"name":"Department of Urology, The Sixth Affiliated Hospital of Jinan University, Dongguan Eastern Central Hospital","place":["Dongguan, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Leming","family":"Song","sequence":"additional","affiliation":[{"name":"Department of Urology, Ganzhou People\u2019s Hospital, Jiangxi Medical College, Nanchang University","place":["Ganzhou, Jiangxi, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tairong","family":"Liu","sequence":"additional","affiliation":[{"name":"Department of Urology, Ganzhou People\u2019s Hospital, Jiangxi Medical College, Nanchang University","place":["Ganzhou, Jiangxi, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hua","family":"Chen","sequence":"additional","affiliation":[{"name":"Department of Urology, Ganzhou People\u2019s Hospital, Jiangxi Medical College, Nanchang University","place":["Ganzhou, Jiangxi, 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