ArticleWorld journal of otorhinolaryngology - head and neck surgery2025
Study on the Vocal Fold Movement Characteristics of Canine Models With Nerve Paralysis Caused by Different Site Injuries.
Article in World journal of otorhinolaryngology - head and neck surgery, 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
Objective: To explore the specific effects of unilateral injuries to the vagus nerve (VN), recurrent laryngeal nerve (RLN), and superior laryngeal nerve (SLN) on the vocal fold movement characteristics, and investigate the regulation pattern of current intensity on the vocal fold movement after the injuries. Methods: Nine Beagle dogs were used to establish right-sided laryngeal nerve injury models, divided into three groups (VN, RLN, and SLN transection groups, Results: (1) Healthy-side RLN stimulation: The amplitude and velocity of vocal fold movements on the injured side were significantly lower than those on the healthy side across all injury groups ( Conclusions: The vocal fold movement regulation pathways partially overlap between RLN and VN injuries. Residual vocal fold motion after SLN injury suggests potential cricothyroid-arytenoid mechanical coupling or neural compensation mechanisms. An electrical stimulation intensity of 2 mA is optimal for RLN/VN injuries, while 4 mA can activate compensatory pathways in SLN injuries. This study provides experimental evidence for the precise diagnosis of laryngeal nerve injuries and the optimization of electrical stimulation parameters.
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