A novel rat model for assessment of laryngotracheal injury following transoral intubation

International Journal of Pediatric Otorhinolaryngology
F JahshanM Gruber

Abstract

Laryngotracheal damage is a well-described complication of endotracheal intubation and animal models are essential for studying the underlying cellular injury cascade. This novel rat model is based on transoral intubation and aims to simulate the common clinical scenario of tube-related airway damage. Prospective randomized control pilot study. 28 male Sprague-Dawley were randomly assigned into three groups: control, 3-h' intubation and 6-h' intubation. The animals were then euthanized and their laryngotracheal complexes sent for histological analysis. Epithelial damage, mucosal thickness and mucosal gland hypertrophy were reviewed. Total of 13 control animals and 15 intubated animals. 10 intubated animals survived the study protocol. Loss of epithelial surface architecture including damage to the microscopic ciliary mechanism was a common feature amongst all intubated animals. Average mucosal thickness of the larynx (including vocal cords and subglottic area) was 143 ± 88 μm for control rats, 315 ± 101 μm for rats intubated 3 h and 574 ± 174 μm for rats intubated 6 h .This was a statistically significant difference. Average mucosal gland hypertrophy in the laryngeal subsite was 0.41 ± 0.5 in control rats, 1.4 ± 0.5 in rats int...Continue Reading

Citations

Apr 2, 2020·Journal of Investigative Surgery : the Official Journal of the Academy of Surgical Research·C C Bravo-ReynaJ Granados
Aug 4, 2020·The Journal of Veterinary Medical Science·Jing ZhengLang Li
Dec 8, 2020·Journal of the Mechanical Behavior of Biomedical Materials·David BerardDavid Restrepo

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