{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,27]],"date-time":"2026-02-27T23:22:57Z","timestamp":1772234577465,"version":"3.50.1"},"reference-count":34,"publisher":"The Korean Society of Anesthesiologists","issue":"5","license":[{"start":{"date-parts":[[2023,1,26]],"date-time":"2023-01-26T00:00:00Z","timestamp":1674691200000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":["ekja.org"],"crossmark-restriction":true},"short-container-title":["Korean J Anesthesiol"],"published-print":{"date-parts":[[2023,10,1]]},"abstract":"<jats:p>Background: The caudal route is a common approach for postoperative analgesia; however, it is associated with limited duration of action. The quadratus lumborum block (QLB) may produce prolonged postoperative analgesia. Therefore, this study aimed to compare the postoperative analgesic efficacy of the ultrasound-guided caudal block with that of the ultrasound-guided transincisional QLB (TiQLB) in pediatric patients undergoing open renal surgery.Methods: Forty patients of both sexes, aged 2\u201311 years, were randomly assigned to receive either caudal analgesia with 1.25 ml\/kg of bupivacaine 0.2% (Caudal group; n = 20) or a QLB with 0.5 ml\/kg of bupivacaine 0.2% (TiQLB group; n = 20) in addition to standard general anesthesia. Time to first analgesia was the primary outcome. Total analgesic consumption in the first 24 h postoperatively, pain scores, and the incidence of side effects were the secondary outcomes.Results: The mean time to first analgesic requirement was significantly longer in the TiQLB group than in the Caudal group (18.8 \u00b1 5.1 vs. 6.7 \u00b1 0.7 h, P &lt; 0.001). Total ketorolac consumption and pain scores were significantly lower in the TiQLB group (P &lt; 0.001). A few cases of mild postoperative nausea and vomiting were noted among patients in both groups; however, the difference was not statistically significant. No incidence of pruritus, shivering, or respiratory depression was noted.Conclusions: Analgesia after the ultrasound-guided TiQLB with bupivacaine was superior to that after the ultrasound-guided caudal block, with similar side effects.<\/jats:p>","DOI":"10.4097\/kja.22774","type":"journal-article","created":{"date-parts":[[2023,1,27]],"date-time":"2023-01-27T07:00:01Z","timestamp":1674802801000},"page":"471-480","update-policy":"https:\/\/doi.org\/10.4097\/crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Ultrasound-guided trans-incisional quadratus lumborum block versus ultrasound-guided caudal analgesia in pediatric open renal surgery:  a randomized trial"],"prefix":"10.4097","volume":"76","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6615-186X","authenticated-orcid":true,"given":"Amin M.","family":"Alansary","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2642-0751","authenticated-orcid":true,"given":"Atef","family":"Badawy","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7975-2904","authenticated-orcid":true,"given":"Marwa A. 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