{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,13]],"date-time":"2026-10-13T19:57:05Z","timestamp":1791921425472,"version":"4.3.4"},"reference-count":16,"publisher":"American Veterinary Medical Association (AVMA)","license":[{"start":{"date-parts":[[2023,6,19]],"date-time":"2023-06-19T00:00:00Z","timestamp":1687132800000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["ajvr"],"published-print":{"date-parts":[[2023,6,19]]},"abstract":"<jats:title>Abstract<\/jats:title>\n<jats:sec id=\"sc_a1\">\n<jats:title>OBJECTIVE<\/jats:title>\n<jats:p>This retrospective study aimed to measure rabbit laryngotracheal dimensions at different locations on computed tomography (CT), assess the relationship of these measurements with rabbit body weight, determine the most common narrowest measurement and assess its relationship with endotracheal tube (ETT) size and body weight.<\/jats:p>\n<\/jats:sec>\n<jats:sec id=\"sc_a2\">\n<jats:title>ANIMALS<\/jats:title>\n<jats:p>66 adult domestic rabbits (<jats:italic>Oryctolagus cuniculus<\/jats:italic>) of different breeds and body weights.<\/jats:p>\n<\/jats:sec>\n<jats:sec id=\"sc_a3\">\n<jats:title>PROCEDURES<\/jats:title>\n<jats:p>CT laryngotracheal luminal height, width, and cross-sectional area measurements were made at the rostral thyroid cartilage at the level of the arytenoids, caudal thyroid cartilage\/rostral cricoid cartilage, caudal cricoid cartilage\/cranial trachea, and trachea at the level of the fifth cervical vertebra.<\/jats:p>\n<\/jats:sec>\n<jats:sec id=\"sc_a4\">\n<jats:title>RESULTS<\/jats:title>\n<jats:p>The data for every measurement of luminal airway dimensions revealed robust positive associations with body weight (<jats:italic>P<\/jats:italic> &lt; .001). The narrowest laryngotracheal measurement was the width at the level of the caudal thyroid cartilage\/rostral cricoid cartilage, and the smallest cross-sectional area was at the rostral thyroid cartilage at the level of the arytenoids. There was a strong association between body weight and the likelihood of appropriate ETT fit. To have at least an 80% chance of appropriate ETT fit with a 2.0, 2.5, and 3.0 mm ETT, the rabbits\u2019 weight predicted by the model (lower 95% confidence limit) were at least 2.99 (2.72) kg, 5.24 (4.65) kg, and 5.80 (5.21) kg, respectively.<\/jats:p>\n<\/jats:sec>\n<jats:sec id=\"sc_a5\">\n<jats:title>CLINICAL RELEVANCE<\/jats:title>\n<jats:p>The laryngotracheal lumen was narrowest at the level of the caudal thyroid cartilage in rabbits, which indicates this location may be the limiting factor in determining ETT size in rabbits.<\/jats:p>\n<\/jats:sec>","DOI":"10.2460\/ajvr.23.04.0073","type":"journal-article","created":{"date-parts":[[2023,6,15]],"date-time":"2023-06-15T13:27:15Z","timestamp":1686835635000},"page":"1-6","source":"Crossref","is-referenced-by-count":1,"title":["Computed tomographic laryngotracheal dimensions in adult domestic rabbits (Oryctolagus cuniculus) are positively associated with body weight and the laryngotracheal lumen is narrowest at the level of the thyroid cartilage"],"prefix":"10.2460","author":[{"given":"Tessa B.","family":"Arendt","sequence":"first","affiliation":[{"name":"Department of Surgical Sciences, School of Veterinary Medicine, University of Wisconsin \u2013 Madison, WI"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Samantha J.","family":"Loeber","sequence":"additional","affiliation":[{"name":"Department of Surgical Sciences, School of Veterinary Medicine, University of Wisconsin \u2013 Madison, WI"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Carrie A.","family":"Schroeder","sequence":"additional","affiliation":[{"name":"Department of Surgical Sciences, School of Veterinary Medicine, University of Wisconsin \u2013 Madison, WI"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael R.","family":"Lasarev","sequence":"additional","affiliation":[{"name":"Department of Biostatistics and Medical Informatics, School of Medicine and Public Health, University of Wisconsin - Madison, WI"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tatiana H.","family":"Ferreira","sequence":"additional","affiliation":[{"name":"Department of Surgical Sciences, School of Veterinary Medicine, University of Wisconsin \u2013 Madison, WI"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1272","reference":[{"key":"B1","series-title":"Laboratory Animal Medicine","first-page":"329","article-title":"Chapter 9 - biology and diseases of rabbits","author":"Suckow MA","year":"2002","unstructured":"Suckow MA, Brammer DW, Rush HG, Chrisp CE. Chapter 9 - biology and diseases of rabbits. In: JG Fox, LC Anderson, FM Loew, FW Quimby, eds. Laboratory Animal Medicine. 2nd ed. Academic Press; 2002:329\u2013364. doi:10.1016\/B978-012263951-7\/50012-0"},{"issue":"2","key":"B2","series-title":"Vet Clin North Am Exot Anim Pract","first-page":"293","article-title":"Anesthesia and analgesia for small mammals and birds","volume":"10","author":"Lichtenberger M","year":"2007","unstructured":"Lichtenberger M, Ko J. Anesthesia and analgesia for small mammals and birds. Vet Clin North Am Exot Anim Pract. 2007;10(2):293\u2013315. doi:10.1016\/j.cvex.2006.12.002"},{"issue":"6","key":"B3","series-title":"J Am Assoc Lab Anim Sci","first-page":"67","article-title":"Tracheal injury after endotracheal intubation and anesthesia in rabbits","volume":"45","author":"Phaneuf LR","year":"2006","unstructured":"Phaneuf LR, Barker S, Groleau MA, Turner PV. Tracheal injury after endotracheal intubation and anesthesia in rabbits. 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