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

Author:

Arendt Tessa B.1,Loeber Samantha J.1,Schroeder Carrie A.1,Lasarev Michael R.2,Ferreira Tatiana H.1

Affiliation:

1. Department of Surgical Sciences, School of Veterinary Medicine, University of Wisconsin – Madison, WI

2. Department of Biostatistics and Medical Informatics, School of Medicine and Public Health, University of Wisconsin - Madison, WI

Abstract

Abstract OBJECTIVE 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. ANIMALS 66 adult domestic rabbits (Oryctolagus cuniculus) of different breeds and body weights. PROCEDURES 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. RESULTS The data for every measurement of luminal airway dimensions revealed robust positive associations with body weight (P < .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’ 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. CLINICAL RELEVANCE 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.

Publisher

American Veterinary Medical Association (AVMA)

Subject

General Veterinary,General Medicine

Reference16 articles.

1. Chapter 9 - biology and diseases of rabbits;Suckow MA,2002

2. Anesthesia and analgesia for small mammals and birds;Lichtenberger M,2007

3. Tracheal injury after endotracheal intubation and anesthesia in rabbits;Phaneuf LR,2006

4. Comparison of a supraglottic airway device (v-gel®) with blind orotracheal intubation in rabbits;Engbers S,2017

5. The vessels of the rabbit trachea and ischemia caused by cuff pressure;Nordin U,1977

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3