{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,12]],"date-time":"2026-10-12T15:34:49Z","timestamp":1791819289774,"version":"4.3.4"},"reference-count":35,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2021,12,1]],"date-time":"2021-12-01T00:00:00Z","timestamp":1638316800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Animals"],"abstract":"<jats:p>Quadratus lumborum block (QLB) is used to provide analgesia for abdominal surgery in humans. The aim of this study was to assess an anaesthetic protocol involving the QLB for canine ovariohysterectomy. Ten dogs were included. Anaesthetic protocol consisted of premedication with IM medetomidine (20 \u03bcg kg\u22121) and SC meloxicam (0.1 mg kg\u22121), induction with propofol to effect, and maintenance with sevoflurane in oxygen\/medical air. QLB was performed injecting 0.4 mL kg\u22121 of 0.25% bupivacaine\/iohexol per side. Computed Tomography (CT) was performed before and after surgery. Fentanyl was administered as rescue analgesia during surgery. The Short Form of The Glasgow Composite Pain Scale and thermal threshold (TT) at the level of the elbow, T10, T13 and L3 were assessed before premedication and every hour postoperatively. Methadone was given as rescue analgesia postoperatively when pain score was &gt;3. A Yuen\u2019s test on trimmed means for dependent samples was used to analyse the data (p &lt; 0.05). CT images showed spreading of the contrast\/block for a median (range) of 3 (2\u20135) vertebrae, without differences between preoperative and postoperative images. One dog needed rescue analgesia during surgery. Pain score was less than 4\/24 in all the animals during the first 4 h after surgery. TT showed a significant increased signal in all the areas tested, apart from the humerus, 30 min after surgery. The QLB may provide additional analgesia for canine ovariohysterectomy. Further studies are needed to assess the specific contribution of the QLB in abdominal analgesia.<\/jats:p>","DOI":"10.3390\/ani11123424","type":"journal-article","created":{"date-parts":[[2021,12,1]],"date-time":"2021-12-01T03:12:40Z","timestamp":1638328360000},"page":"3424","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":47,"title":["Evaluation of Quadratus Lumborum Block as Part of an Opioid-Free Anaesthesia for Canine Ovariohysterectomy"],"prefix":"10.3390","volume":"11","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0162-941X","authenticated-orcid":false,"given":"Jaime","family":"Viscasillas","sequence":"first","affiliation":[{"name":"Departamento Medicina y Cirug\u00eda Animal, Facultad de Veterinaria, Universidad Cardenal Herrera-CEU, CEU Universities, 46115 Valencia, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sandra","family":"Sanchis-Mora","sequence":"additional","affiliation":[{"name":"The Royal Veterinary College, Hawkshead Lane, North Mymms, Hatfield AL9 7TA, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Paula","family":"Burillo","sequence":"additional","affiliation":[{"name":"Departamento Medicina y Cirug\u00eda Animal, Facultad de Veterinaria, Universidad Cardenal Herrera-CEU, CEU Universities, 46115 Valencia, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Vicente","family":"Esteve","sequence":"additional","affiliation":[{"name":"Departamento Medicina y Cirug\u00eda Animal, Facultad de Veterinaria, Universidad Cardenal Herrera-CEU, CEU Universities, 46115 Valencia, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0359-396X","authenticated-orcid":false,"given":"Ayla","family":"Del Romero","sequence":"additional","affiliation":[{"name":"Departamento Medicina y Cirug\u00eda Animal, Facultad de Veterinaria, Universidad Cardenal Herrera-CEU, CEU Universities, 46115 Valencia, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pilar","family":"Lafuente","sequence":"additional","affiliation":[{"name":"Department of Clinical Science and Services, Universidad Internacional de La Rioja (UNIR), Av. de la Paz, 137, 26006 Logro\u00f1o, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5377-9650","authenticated-orcid":false,"given":"Jose Ignacio","family":"Redondo","sequence":"additional","affiliation":[{"name":"Departamento Medicina y Cirug\u00eda Animal, Facultad de Veterinaria, Universidad Cardenal Herrera-CEU, CEU Universities, 46115 Valencia, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2021,12,1]]},"reference":[{"key":"ref_1","first-page":"130","article-title":"TAP block under ultrasound guidance: The description of a \u2018non pops technique\u2019","volume":"32","author":"Blanco","year":"2007","journal-title":"Reg. 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