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Neostigmine (acetylcholinesterase inhibitor), co-administered with glycopyrrolate, is frequently given for neuromuscular reversal before tracheal extubation and modulates the CAIP. An alternative reversal agent, sugammadex (selective rocuronium or vecuronium binder), acts independently from the CAIP. The aim of our study was to assess the impact of neuromuscular reversal agents used during anaesthesia on gastrointestinal recovery.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Methods<\/jats:title>\n                <jats:p>Three hundred thirty-five patients undergoing elective colorectal surgery at the Royal Adelaide Hospital between January 2019 and December 2021 were retrospectively included. The primary outcome was GI-2, a validated composite measure of time to diet tolerance and passage of stool. Demographics, 30-day complications and length of stay were collected. Univariate and multivariate analyses were performed.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>Two hundred twenty-four (66.9%) patients (129 [57.6%] males and 95 [42.4%] females, median age 64 [19\u201390] years) received neostigmine\/glycopyrrolate and 111 (33.1%) received sugammadex (62 [55.9%] males and 49 [44.1%] females, median age 67 [18\u201394] years). Sugammadex patients achieved GI-2 sooner after surgery (median 3 (0\u201310) vs. 3 (0\u201312) days, <jats:italic>p<\/jats:italic>\u2009=\u20090.036), and reduced time to first stool (median 2 (0\u201310) vs. 3 (0\u201312) days, <jats:italic>p<\/jats:italic>\u2009=\u20090.035). Rates of POI, complications and length of stay were similar. On univariate analysis, POI was associated with smoking history, previous abdominal surgery, colostomy formation, increased opioid use and postoperative hypokalaemia (<jats:italic>p<\/jats:italic>\u2009&lt;\u20090.05). POI was associated with increased complications, including anastomotic leak and prolonged hospital stay (<jats:italic>p<\/jats:italic>\u2009&lt;\u20090.001). On multivariate analysis, neostigmine, bowel anastomoses and increased postoperative opioid use (<jats:italic>p<\/jats:italic>\u2009&lt;\u20090.05) remained predictive of time to GI-2.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusions<\/jats:title>\n                <jats:p>Patients who received sugammadex had a reduced time to achieving first stool and GI-2. Neostigmine use, bowel anastomoses and postoperative opioid use were associated with delayed time to achieving GI-2.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1007\/s10151-022-02695-w","type":"journal-article","created":{"date-parts":[[2022,9,5]],"date-time":"2022-09-05T17:02:33Z","timestamp":1662397353000},"page":"217-226","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":11,"title":["Effect of neuromuscular reversal with neostigmine\/glycopyrrolate versus sugammadex on postoperative ileus following colorectal surgery"],"prefix":"10.1007","volume":"27","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0327-7334","authenticated-orcid":false,"given":"L.","family":"Traeger","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"T. 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