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Exam 4
Equine Guttural Pouch Disorders
24
Veterinary Medicine
Professional
03/31/2017

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Cards

Term
What are the guttural pouches?
Definition
paired extensions of the eustachian tubes
Term
What are the compartments of the guttural pouches? What separates them?
Definition
-lateral pouch & medial pouch
-stylohyoid bone
Term
What cranial nerves run through the guttural pouches?
Definition
-9, 10, 11, 12
Term
Which vessel in the guttural pouch is of huge importance?
Definition
-internal carotid a
Term
What is guttural pouch empyema?
Definition
-purulent exudate w/in the guttural pouches
Term
What is the typical signalment of horses w/ guttural pouch empyema?
Definition
-young hourses: yearlings-4y
Term
What is the typical etiology behind guttural pouch empyema?
Definition
-URT infection
-retropharyngeal LN abscessation due to Strangles
Term
What are the clinical signs of guttural pouch empyema?
Definition
-mucopurulent nasal discharge: esp one that doesn't clear up
-LN enlargement
-swelling behind ramus
-+/- fever
Term
How do we diagnose guttural pouch empyema?
Definition
-endoscope
-fluid line on rads
Term
How do we treat guttural pouch empyema?
Definition
-parenteral abx: Penicillin, ceftiofur
-NSADs
-lavage: balaned eletrolyte sln
-repository abx
-lavage w/ nasal catheter through pharyngeal openings
-lavage via nasal catheter w/ ventral drainage
Term
What is the major potential sequela of guttural pouch empyema?
Definition
-chondroids: inspissated pus
Term
How do we treat chondroids?
Definition
-surgical removal
Term
What is the Modified Whitehouse approach to chondroid removal?
Definition
-standing sedation w/ local block
-enter GP just under linguofacial v w/ blunt dissection
-use endoscope at same time
Term
What is guttural pouch tympany? Typical signalment?
Definition
-gross distesion of GP w/ air, usually unilaterally
-mostly foals <12m
Term
What etiology is behind guttural pouch tympany?
Definition
-dysfunction of pharyngeal openings of GP
Term
What are the clinical signs of guttural pouch tympany?
Definition
-distension of GP
Term
How do we diagnose guttural pouch tympany?
Definition
-endoscope: no abnormalities are seen & decompression can be accomplished
-rads
Term
How do we treat guttural pouch tympany?
Definition
-unilateral: surgically make connection b/n puches
-bilateral: make hole into dorsal recess of pharynx
Term
What is guttural pouch mycosis?
Definition
-mycotic infection of guttural pouch affecting ICA
Term
What is the signalment of guttural pouch mycosis? Etiology?
Definition
-no apparent predisposition
-maybe more occurence in Northern US
-etiology: maybe Aspergillus
Term
What are the clinical signs of guttural pouch mycosis?
Definition
-SEVERE BILATERAL EPISTAXIS
-CN deficits: dysphagia, pharyngeal paresis, LLH, horner's, CNS dysfunciton
Term
How do you diagnose guttural pouch mycosis?
Definition
-endoscope: see plaques growing on ICA in GP
Term
How do we treat guttural pouch mycosis?
Definition
-topical infusions of antifungals
-systemic antifungals
-NSAIDs
-surgical ligation of ICA
-ballon-catheter occlusion of ECA & maxillary
Term
What makes up the borders of Viborg's triangle?
Definition
-sternocephalicus
-linguofacial v
-vertical ramus
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