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Odelros, Emma, 2012. Dynamic obstructions of the equine upper respiratory tract. First cycle, G2E. Uppsala: SLU, Dept. of Biomedical Sciences and Veterinary Public Health

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Abstract

Dysfunction of the upper respiratory tract is a common cause of impaired performance and intolerance to exercise in racehorses and include several upper airway obstructions. The ones termed dynamic obstructions are primarily seen during physical exertion and affected horses often appear to be normal during endoscope examination at rest. The correlation between diagnoses made at rest respectively exercise is low, suggesting that an examination at rest alone is likely to be insufficient.

The upper respiratory tract is exposed to great differences in pressure throughout the respiratory cycle; variations that are further altered during strenuous exercise and affect the rigidity of upper airway structures. In presence of great fluctuations in pressure, stability is achieved through coordinated and synchronous neuromuscular mechanisms. Due to nerve damage or anatomical abnormalities, these functions may be disrupted and further cause a dynamic collapse of the upper respiratory tract when pressure changes become too severe.

The etiology behind the neuromuscular dysfunction is not yet fully understood. Since the underlying cause of the obstructions is unknown, further studies are required in order to prevent the dynamic collapses from occurring in the future.

Main title:Dynamic obstructions of the equine upper respiratory tract
Authors:Odelros, Emma
Supervisor:Kvart, Clarence
Examiner:Fredriksson, Mona
Series:Veterinärprogrammet, examensarbete för kandidatexamen / Sveriges lantbruksuniversitet, Institutionen för biomedicin och veterinär folkhälsovetenskap (t.o.m. 2015)
Volume/Sequential designation:2012:24
Year of Publication:2012
Level and depth descriptor:First cycle, G2E
Student's programme affiliation:VY002 Veterinary Medicine Programme 330 HEC
Department:(VH) > Dept. of Biomedical Sciences and Veterinary Public Health
Keywords:häst, svalg, dysfunktion, obstruktion, struppipning, DDSP, etiologi, orsak
URN:NBN:urn:nbn:se:slu:epsilon-s-1102
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-s-1102
Subjects:Miscellaneous animal disorders
Language:English
Deposited On:30 Apr 2012 11:10
Metadata Last Modified:30 Apr 2012 11:10

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