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The primary outcome was the relationship between the door-to-ultrasound (US)\/CT time and ED-LOS. The secondary outcome was the relationship between the door-to-US\/CT time and time to surgical consultation.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Results<\/jats:title>\n            <jats:p>A total of 1627 patients were included with 264 in the PoCUS first group. In the PoCUS group, door-to-US time was positively associated with ED-LOS (\u03b2\u2009=\u20090.27, <jats:italic>p<\/jats:italic>\u2009&lt;\u20090.001) and time to surgical consultation (\u03b2\u2009=\u20090.36, <jats:italic>p<\/jats:italic>\u2009&lt;\u20090.001). Similarly, door-to-CT time was also positively associated with ED-LOS (\u03b2\u2009=\u20090.21, <jats:italic>p<\/jats:italic>\u2009&lt;\u20090.001) and time to surgical consultation (\u03b2\u2009=\u20090.75, <jats:italic>p<\/jats:italic>\u2009&lt;\u20090.001) in the CT group. Conducting PoCUS within 60\u00a0min was associated with a reduced ED-LOS and time to surgical consultation, resulting in a saving of 22.4\u00a0h and 266\u00a0min, respectively. In the CT group, performing CT within 120\u00a0min was associated with a reduced ED-LOS and time to surgical consultation, resulting in a decrease of 12\u00a0h and 188\u00a0min, respectively. The ED-LOS and time to surgical consultation were similar between patients receiving PoCUS within 60\u00a0min in PoCUS group and those receiving CT within 120\u00a0min in the CT group.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Conclusions<\/jats:title>\n            <jats:p>Performing PoCUS within 60\u00a0min or CT within 120\u00a0min was associated with shorter ED-LOS and earlier surgical consultation, enhancing the ED efficiency in patients with mild AC.<\/jats:p>\n            <jats:p>\n              <jats:italic>Trial registration<\/jats:italic>\n              <jats:bold>:<\/jats:bold> NCT04149041 at ClinicalTrial.gov.<\/jats:p>\n          <\/jats:sec>","DOI":"10.1186\/s13049-025-01341-2","type":"journal-article","created":{"date-parts":[[2025,2,10]],"date-time":"2025-02-10T13:30:11Z","timestamp":1739194211000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":11,"title":["Impact of a POCUS-first versus CT-first approach on emergency department length of stay and time to surgical consultation in patients with acute cholecystitis: a retrospective study"],"prefix":"10.1186","volume":"33","author":[{"given":"Chien-Tai","family":"Huang","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Liang-Wei","family":"Wang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shao-Yung","family":"Lin","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tai-Yuan","family":"Chen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yi-Ju","family":"Ho","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pei-Hsiu","family":"Wang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kao-Lang","family":"Liu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yao-Ming","family":"Wu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hsiu-Po","family":"Wang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wan-Ching","family":"Lien","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2025,2,10]]},"reference":[{"key":"1341_CR1","doi-asserted-by":"crossref","first-page":"828","DOI":"10.1177\/00031348211054567","volume":"88","author":"MD Cook","year":"2022","unstructured":"Cook MD, Karim SA, Jensen HK, et al. 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