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Special:MobileDiff/111265
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Laryngeal Hemiplegia
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Revision as of 14:10, 9 March 2011
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14:10, 9 March 2011
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[http://w3.vet.cornell.edu/nst/nst.asp?Fun=F_KSsrch&kw=HEMIPLEGIA View images courtesy of Cornell Veterinary Medicine]
[http://w3.vet.cornell.edu/nst/nst.asp?Fun=F_KSsrch&kw=HEMIPLEGIA View images courtesy of Cornell Veterinary Medicine]
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Idiopathic Laryngeal Hemiplegia:
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:Progressive loss of fibres (esp. large diameter) within left recurrent laryngeal nerve compared to right
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:Dying back axonopathy with myelin sheath involvement:
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:Degenerating fibres
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:Regenerating clusters
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:De/Re-myelination
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:Flattening of nerve between aorta & trachea
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:Inspiratory 'roaring' noise - flapping of vocal fold
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:'Slap test' - adduction of contralateral arytenoid during expiration
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:Endoscopic examination - assymetric arytenoids, poor abduction of left vocal fold.
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:Palpable atrophy of laryngeal musculature
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:Laryngeal Ventriculectomy (Hobday procedure)
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:'Tie Back'
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:Laryngeal muscle prosthesis
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:Prognosis usually good
==Test yourself with the Larynx Pathology Flashcards==
==Test yourself with the Larynx Pathology Flashcards==
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[[Category:Respiratory Diseases - Horse]]
[[Category:Respiratory Diseases - Horse]]
[[Category:Central Nervous System - Degenerative Pathology]]
[[Category:Central Nervous System - Degenerative Pathology]]
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[[Category:Peripheral Nervous System - Pathology]]
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