{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,25]],"date-time":"2026-02-25T05:16:24Z","timestamp":1771996584020,"version":"3.50.1"},"reference-count":27,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2024,1,24]],"date-time":"2024-01-24T00:00:00Z","timestamp":1706054400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/100000002","name":"National Institutes of Health","doi-asserted-by":"publisher","award":["U54GM115516"],"award-info":[{"award-number":["U54GM115516"]}],"id":[{"id":"10.13039\/100000002","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Pain Practice"],"published-print":{"date-parts":[[2024,6]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>Transversus abdominis plane blocks are an established method of postoperative analgesia for abdominopelvic surgeries. Liposomal bupivacaine is an extended\u2010release formulation of bupivacaine providing up to 72\u2009h of analgesia. This study aims to determine if transversus abdominis plane blocks performed with liposomal bupivacaine are associated with reduced opioid consumption and level of pain intensity compared to conventional bupivacaine in patients undergoing lower abdominal surgery.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>This retrospective cohort study was conducted at a single institution between December 2020 and December 2021. After institutional review board approval, we identified patients who underwent lower abdominopelvic surgery with transversus abdominis plane blocks done with liposomal or conventional bupivacaine and collected demographic, clinical, and procedural information for analysis. We compared total opioid consumption over 72\u2010h postoperatively in milligram morphine equivalents (MME), frequency of opioid utilization, and average level of pain intensity between groups. These outcomes were also evaluated after adjusting for covariates. Data were presented as mean\u2009\u00b1\u2009SD, median [IQR] or frequency (%), as appropriate; <jats:italic>p<\/jats:italic>\u2009&lt;\u20090.05 was accepted as significant.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>A total of 178 patients met inclusion criteria, with 79 patients receiving an admixture of liposomal bupivacaine and conventional bupivacaine and 99 patients receiving conventional bupivacaine. The liposomal bupivacaine group had a median opioid consumption 72\u2010h postoperatively of 47.5 [18\u201391.8] MME compared to 88 [43.8\u2013160] MME in the conventional bupivacaine group, <jats:italic>p<\/jats:italic>\u2009=\u20090.045. Differences in opioid consumption between the groups did not reach statistical significance after adjustment for demographic and clinical characteristics, <jats:italic>p<\/jats:italic>\u2009=\u20090.11. There was no significant difference in frequency of opioid use or average pain intensity.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Transversus abdominis plane blocks using an admixture of liposomal bupivacaine conventional bupivacaine are not associated with decreased opioid consumption or reduced pain up to 72\u2009h following elective abdominopelvic surgery.<\/jats:p><\/jats:sec>","DOI":"10.1111\/papr.13347","type":"journal-article","created":{"date-parts":[[2024,1,24]],"date-time":"2024-01-24T14:49:03Z","timestamp":1706107743000},"page":"717-723","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Liposomal bupivacaine in transversus abdominis plane blocks for lower abdominal surgery"],"prefix":"10.1111","volume":"24","author":[{"given":"Obiyo","family":"Osuchukwu","sequence":"first","affiliation":[{"name":"Department of Anesthesiology and Perioperative Medicine Maine Medical Center  Portland Maine USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"James","family":"Gagnon","sequence":"additional","affiliation":[{"name":"Department of Anesthesiology and Perioperative Medicine Maine Medical Center  Portland Maine USA"},{"name":"Spectrum Healthcare Partners  South Portland Maine USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Janelle","family":"Richard","sequence":"additional","affiliation":[{"name":"Department of Anesthesiology and Perioperative Medicine Maine Medical Center  Portland Maine USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wendy","family":"Craig","sequence":"additional","affiliation":[{"name":"MaineHealth Institute for Research  Scarborough Maine USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7573-2164","authenticated-orcid":false,"given":"Aurora","family":"Quaye","sequence":"additional","affiliation":[{"name":"Department of Anesthesiology and Perioperative Medicine Maine Medical Center  Portland Maine USA"},{"name":"Spectrum Healthcare Partners  South Portland Maine USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2024,1,24]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.1213\/ane.0b013e3181871313"},{"key":"e_1_2_9_3_1","doi-asserted-by":"publisher","DOI":"10.2147\/JPR.S65151"},{"key":"e_1_2_9_4_1","doi-asserted-by":"publisher","DOI":"10.1097\/DCR.0000000000000211"},{"key":"e_1_2_9_5_1","doi-asserted-by":"publisher","DOI":"10.1213\/01.ane.0000290294.64090.f3"},{"key":"e_1_2_9_6_1","doi-asserted-by":"publisher","DOI":"10.1213\/01.ane.0000250223.49963.0f"},{"key":"e_1_2_9_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.rapm.2005.10.006"},{"key":"e_1_2_9_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jss.2014.12.034"},{"key":"e_1_2_9_9_1","doi-asserted-by":"publisher","DOI":"10.1089\/lap.2017.0337"},{"key":"e_1_2_9_10_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00464-017-5686-7"},{"key":"e_1_2_9_11_1","unstructured":"Exparel [package insert]. 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