ArticleFrontiers in veterinary science2025
Anaesthesia-induced atelectasis in a rat model (
Article in Frontiers in veterinary science, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Introduction: Anaesthesia-induced atelectasis has been observed in many animal species, developing during intravenous or inhalational anaesthesia, with or without mechanical ventilation. Ultrasonography of the lungs is a rapid and non-invasive method that has been shown to be effective in detecting atelectasis. This article aimed to describe anaesthesia-induced atelectasis diagnosed through lung ultrasound in a rat model under isoflurane anaesthesia. Methods: A total of 12 clinically healthy, 6-month-old rats ( Results: The LUSS of all conscious animals showed no pathological changes in the lungs. The adapted LUSS proved to be easy to understand and was consistently applied by all observers. The analysis showed a moderate level of agreement between experts in the assessment of recordings obtained before anaesthesia (0.40 < Kendall's tau < 0.59) and a very high level of agreement in the assessment of recordings obtained during the induction of anaesthesia and 2 min after the onset of anaesthesia. Additionally, there was a strong consensus regarding the overall assessment of recordings obtained before, during, and after anaesthesia (0.80 < Kendall's tau < 1.00). Histopathological examination revealed no abnormal findings in any of the animals. Conclusion: In conclusion, anaesthesia-induced atelectasis can lead to marked ultrasonographic changes in gravity-dependent areas in a rat model anaesthetised with isoflurane. The modified version of Oricco's LUSS showed significant interobserver agreement, indicating its potential reliability for thoracic ultrasound examinations in laboratory and pet rats.
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