{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,30]],"date-time":"2026-09-30T15:38:52Z","timestamp":1790782732217,"version":"4.1.0"},"reference-count":35,"publisher":"The Korean Society of Anesthesiologists","issue":"2","license":[{"start":{"date-parts":[[2025,1,21]],"date-time":"2025-01-21T00:00:00Z","timestamp":1737417600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100004202","name":"Ondokuz Mayis University","doi-asserted-by":"crossref","award":["PYO.TIP.1904.23.019"],"award-info":[{"award-number":["PYO.TIP.1904.23.019"]}],"id":[{"id":"10.13039\/501100004202","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":["ekja.org"],"crossmark-restriction":true},"short-container-title":["Korean J Anesthesiol"],"published-print":{"date-parts":[[2025,4,1]]},"abstract":"<jats:p>Background: Laparoscopic sleeve gastrectomy (LSG) causes significant postoperative pain, necessitating effective multimodal analgesia strategies. This study evaluated the efficacy of the external oblique intercostal block (EOIB) in this context.Methods: This prospective, randomized, controlled, single-blind study conducted between April and December 2023 included 60 patients who underwent LSG. Patients were divided into the EOIB (30 ml 0.25% bupivacaine\/side) and control (no block) groups. The primary outcome was the cumulative intravenous morphine milligram equivalent (MME) consumption in the first 24 h postoperatively. Secondary outcomes included 12-h MME consumption, pain scores, intraoperative remifentanil use, rescue analgesia requirements, time to first analgesic request, nausea\/vomiting scores, antiemetic use, and American Pain Society Patient Outcome Questionnaire-Revised Turkish Version (APS-POQ-R-TR) scores.Results: The control group had significantly higher median opioid consumption than the EOIB group at 12 (14.4 vs. 5.8 mg; P &lt; 0.001) and 24 h (25.9 vs. 10.6 mg; P &lt; 0.001) postoperatively. The need for rescue analgesics did not differ significantly (43.3 vs. 23.3%; P = 0.1). The EOIB group exhibited significantly higher patient satisfaction (APS-POQ-R-TR score 2.91 vs. 4.42; P &lt; 0.001) and consistently lower pain scores across all time points (P &lt; 0.001). The EOIB group had lower nausea\/vomiting scores (P &lt; 0.001), fewer patients requiring antiemetics (16.7% vs. 40%; P = 0.045), longer time to first morphine request (57.5 vs. 25 min; P &lt; 0.001), and lower remifentanil use (850 vs. 1050 \u03bcg; P &lt; 0.001).Conclusions: The preoperative EOIB, as a part of multimodal analgesia, provides effective analgesia for acute pain in patients undergoing LSG.<\/jats:p>","DOI":"10.4097\/kja.24569","type":"journal-article","created":{"date-parts":[[2025,1,21]],"date-time":"2025-01-21T05:23:21Z","timestamp":1737437001000},"page":"159-170","update-policy":"https:\/\/doi.org\/10.4097\/crossmark_policy","source":"Crossref","is-referenced-by-count":17,"title":["Analgesic efficacy of the external oblique intercostal fascial plane block on postoperative acute pain in laparoscopic sleeve gastrectomy:  a randomized controlled 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