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Guttural Pouch Tympany (view source)
Revision as of 17:53, 17 February 2011
, 17:53, 17 February 2011Created page with "==Introduction== *Congenital defect of ostia (drainage openings of guttural pouches into pharynx) *Potentially secondary to inflammation *Unilateral or bilateral *Marked retroph..."
==Introduction==
*Congenital defect of ostia (drainage openings of guttural pouches into pharynx)
*Potentially secondary to inflammation
*Unilateral or bilateral
*Marked retropharyngeal swelling
*Abnormal distention of pouch with air
*Congenital defect of ''plica salpingopharyngium'' - one way valve trapping air
*Occurs more in fillies than colts
3. '''Guttural Pouch Tympany''':
- Foals up to one year of age. The guttural pouch fills with air, but cannot escape through the pharyngotubal opening (acts as a one-way valve allowing air to be drawn into the pouch, but not expelled from it). Usually there is no gross abnormality of the opening.
- Visible external swelling and large pouch on radiographs.
- Consequences: collapse of pharyngeal roof, and therefore dysphagia.
- Unilateral tympany can be treated by forcing an opening in the median septum (fenestration) so that both pouches communicate with the pharynx through a single opening.
- Bilateral tympany - parts of the flaps guarding the openings may have to be removed.
==Test yourself with the Guttural Pouches Pathology Flashcards==
[[Guttural_Pouches_Flashcards_-_Pathology|Guttural Pouches Pathology Flashcards]]
[[Category:Guttural Pouch - Pathology]]
*Congenital defect of ostia (drainage openings of guttural pouches into pharynx)
*Potentially secondary to inflammation
*Unilateral or bilateral
*Marked retropharyngeal swelling
*Abnormal distention of pouch with air
*Congenital defect of ''plica salpingopharyngium'' - one way valve trapping air
*Occurs more in fillies than colts
3. '''Guttural Pouch Tympany''':
- Foals up to one year of age. The guttural pouch fills with air, but cannot escape through the pharyngotubal opening (acts as a one-way valve allowing air to be drawn into the pouch, but not expelled from it). Usually there is no gross abnormality of the opening.
- Visible external swelling and large pouch on radiographs.
- Consequences: collapse of pharyngeal roof, and therefore dysphagia.
- Unilateral tympany can be treated by forcing an opening in the median septum (fenestration) so that both pouches communicate with the pharynx through a single opening.
- Bilateral tympany - parts of the flaps guarding the openings may have to be removed.
==Test yourself with the Guttural Pouches Pathology Flashcards==
[[Guttural_Pouches_Flashcards_-_Pathology|Guttural Pouches Pathology Flashcards]]
[[Category:Guttural Pouch - Pathology]]