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Clinical bottom line:

Examination of a human systematic review and two veterinary prospective trials suggest topical application on the glottis, and placement of lidocaine on the endotracheal tube both seem to improve sore throat and laryngeal response in animals. Choice of pre-medicants and induction agents appears to have an impact on the extent of lidocaine efficacy. Consideration should be given in allowing enough time for lidocaine placement to have effect (around 60-90 seconds). Limitations in more confident assertions of the efficacy of lidocaine being utilized to prevent tracheitis is that only the human systematic review had enough follow up time to examine the benefits of lidocaine on sore throat in intubation.


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