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Created page with "*Axonal degeneration and subsequent dysfunction of the recurrent laryngeal nerve -> atrophy and functional paralysis of the cricoarytenoid muscle which is the main abductor of th..."

*Axonal degeneration and subsequent dysfunction of the recurrent laryngeal nerve -> atrophy and functional paralysis of the cricoarytenoid muscle which is the main abductor of the arytenoid cartilage -> inability to abduct arytenoid cartilage -> incomplete dilation of the [[Larynx - Anatomy & Physiology|larynx]] during inspiration and the flaccid arytenoid cartilage can be sucked into the laryngeal lumen during inspiration -> inspiratory dyspnoea
*Caused by idiopathic neuronal degeneration
*In Dogs
**Mainly large breeds eg: Labradors
**Usually bilateral disease
**Usually associated with other clinically apparent neurological or electromyographic defects
**May be caused by:
***[[Thyroid Gland - Pathology#Hypothyroidism|Hypothyroidism]]
***Toxins - organophosphate toxicity, lead poisoning
***Congenital abnormalities of the recurrent laryngeal nerve and brain stem - young age of onset
***Secondary compression or inflammation of the recurrent laryngeal nerve

==Test yourself with the Larynx Pathology Flashcards==

[[Larynx_Flashcards_-_Pathology|Larynx Pathology Flashcards]]

[[Category:Larynx - Pathology]]
[[Category:Respiratory System - Degenerative Pathology]]

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Laryngeal Paralysis (view source)

Revision as of 12:34, 18 February 2011