Mucosal injury following short term tracheal intubation: a novel animal model and composite injury score
Objectives: Postintubation laryngotracheal injury is common. Assessment of histopathological changes currently requires animal models. We set about developing a viable, resource effective animal model to study these effects and to develop a detailed tissue injury score. Methods: Six pigs were anaes...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley Open Access
2018
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| Online Access: | https://eprints.nottingham.ac.uk/51529/ |
| _version_ | 1848798517393358848 |
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| author | Sinha, Rishie Correia, Ricardo Gardner, David Grau-Roma, Llorenc de Brot, Simone Hardman, Jonathan Morgan, Steve Norris, Andrew |
| author_facet | Sinha, Rishie Correia, Ricardo Gardner, David Grau-Roma, Llorenc de Brot, Simone Hardman, Jonathan Morgan, Steve Norris, Andrew |
| author_sort | Sinha, Rishie |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Objectives: Postintubation laryngotracheal injury is common. Assessment of histopathological changes currently requires animal models. We set about developing a viable, resource effective animal model to study these effects and to develop a detailed tissue injury score.
Methods: Six pigs were anaesthetised using a standard regimen. We intubated the tracheas using a standard endotracheal tube modified to include optical sensors. Animals were anaesthetised for a duration of two to four hours, and their lungs were ventilated using a normoxic gas mixture. Following euthanasia, the tracheas were removed and underwent histological assessment by two independent veterinary pathologists. The histological lesions, including controls, were described and quantified, and two pathologists classified tissues according to a novel injury score.
Results: Mean duration of tracheal intubation was 191 minutes (SD±41.6). In all except one animal, cuff pressures were maintained in the range of 25 – 45 cmH20. Histopathological findings in all study animals showed more extensive changes than previously described with short-term intubation. Changes were seen in all mucosal layers consistent with acute, suppurative and ulcerative tracheitis. The range of scores of the developed composite scoring system among the animals was wider than in earlier descriptions. There was a high percentage of agreement between both pathologists.
Conclusions: We have described a novel tissue injury score to assess pathological changes following short term intubation in a viable animal model. The scoring system distinguished between the test animals as well as controls and may be appropriate for continuing study of intubation injury. |
| first_indexed | 2025-11-14T20:21:02Z |
| format | Article |
| id | nottingham-51529 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T20:21:02Z |
| publishDate | 2018 |
| publisher | Wiley Open Access |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-515292018-09-19T12:02:27Z https://eprints.nottingham.ac.uk/51529/ Mucosal injury following short term tracheal intubation: a novel animal model and composite injury score Sinha, Rishie Correia, Ricardo Gardner, David Grau-Roma, Llorenc de Brot, Simone Hardman, Jonathan Morgan, Steve Norris, Andrew Objectives: Postintubation laryngotracheal injury is common. Assessment of histopathological changes currently requires animal models. We set about developing a viable, resource effective animal model to study these effects and to develop a detailed tissue injury score. Methods: Six pigs were anaesthetised using a standard regimen. We intubated the tracheas using a standard endotracheal tube modified to include optical sensors. Animals were anaesthetised for a duration of two to four hours, and their lungs were ventilated using a normoxic gas mixture. Following euthanasia, the tracheas were removed and underwent histological assessment by two independent veterinary pathologists. The histological lesions, including controls, were described and quantified, and two pathologists classified tissues according to a novel injury score. Results: Mean duration of tracheal intubation was 191 minutes (SD±41.6). In all except one animal, cuff pressures were maintained in the range of 25 – 45 cmH20. Histopathological findings in all study animals showed more extensive changes than previously described with short-term intubation. Changes were seen in all mucosal layers consistent with acute, suppurative and ulcerative tracheitis. The range of scores of the developed composite scoring system among the animals was wider than in earlier descriptions. There was a high percentage of agreement between both pathologists. Conclusions: We have described a novel tissue injury score to assess pathological changes following short term intubation in a viable animal model. The scoring system distinguished between the test animals as well as controls and may be appropriate for continuing study of intubation injury. Wiley Open Access 2018-07-11 Article PeerReviewed application/pdf en cc_by_nc_nd https://eprints.nottingham.ac.uk/51529/7/lio2.168.pdf Sinha, Rishie, Correia, Ricardo, Gardner, David, Grau-Roma, Llorenc, de Brot, Simone, Hardman, Jonathan, Morgan, Steve and Norris, Andrew (2018) Mucosal injury following short term tracheal intubation: a novel animal model and composite injury score. Laryngoscope Investigative Otolaryngology . ISSN 2378-8038 https://onlinelibrary.wiley.com/doi/pdf/10.1002/lio2.168 doi:10.1002/lio2.168 doi:10.1002/lio2.168 |
| spellingShingle | Sinha, Rishie Correia, Ricardo Gardner, David Grau-Roma, Llorenc de Brot, Simone Hardman, Jonathan Morgan, Steve Norris, Andrew Mucosal injury following short term tracheal intubation: a novel animal model and composite injury score |
| title | Mucosal injury following short term tracheal intubation: a novel animal model and composite injury score |
| title_full | Mucosal injury following short term tracheal intubation: a novel animal model and composite injury score |
| title_fullStr | Mucosal injury following short term tracheal intubation: a novel animal model and composite injury score |
| title_full_unstemmed | Mucosal injury following short term tracheal intubation: a novel animal model and composite injury score |
| title_short | Mucosal injury following short term tracheal intubation: a novel animal model and composite injury score |
| title_sort | mucosal injury following short term tracheal intubation: a novel animal model and composite injury score |
| url | https://eprints.nottingham.ac.uk/51529/ https://eprints.nottingham.ac.uk/51529/ https://eprints.nottingham.ac.uk/51529/ |