Flashcards in Surgical conditions of the nasopharynx Deck (47)
What is an issue with the pharynx compared to sinuses etc?
strong reliance on proper innervation for structure
What is the pharynx anatomically?
conduit between nasal passages and larynx
What are the functions of the pharynx?
What are the pharyngeal muscles?
HO id dilateion and constriction of the pharynx achieved?
coordinated function fo the nasopharyngeal muscles
What is the nerve supply to back of through?
10, 5 is involved as well
What animals get pharyngitits (pharyngeal lymphoid hyperplasi)
what is the istory of pharyngitits?
decreased performance/noise? (throat hurts)--turbulence over bumps
HOw is pharyngitis dx?
What are the grades fof pharyngitits?
What is the treatment for pharyngitis?
regular vaccination against virus induced upper airway inflam
3. rest! rest! rest! 4-5d (owner's dont want)--oft go away
4. sx only if large
Why must you rest horses with pharyngitis?
turbulent airflow due to the bumps causes more inflammation to the area
What is the cause of pharyngeal collapse?
dysfunction of stylopharyngeus muscle (cranial nerve IX)
Is pharyngeal collapse significant?
yes, but don't know why? 9-15yr old warmbloods
(some degree of collapse normal in exercising horse)
What does the stylopharyngeus msucle do?
hold up the dorsal pharyngeal wall
Why do you always scope the gutteral pouches with pharyngeal collapse?
because the stylopharyngeus is innervated by cranial nerve IX that runs over gutteral pouch and issues with gutterual pouch can cause neuropraxia of the 9th cranial nerve
Why shouldn't you sedate a horse that suspect has pharyngeal collapse?
because sedation causes pharyngeal collapse
How is pharyngeal collapse diagnosed?
endoscopy (at rest of exercise)
What is the treatment for pharyngeal collapse?
Why should you assess how bad the pharyngeal collapse is before exercising a horse?
because they may get agitated and stop and come off the back of the treadmill
What is the significance of dorsal displacement of the soft palate?
Is dorsal displacemnt of the softt palate common?
yes, often in young raace horses
What are two types of dorsal displacement of soft palate?
What kind of obstruction does dorsal displacement of the soft palate cause?
expiratory airway obstruction
What is the consequence of dorsal displacement of the soft palate?
What are the theories of etiology of dorsal displacement of soft palate?
1. abnormal soft palate
2. epiglottic hypoplasia
3. excessive caudal retraction
4. caudal retactio nof tongue
5. open mouth
6. neuromscular dysfunction (pharyngeal branch of vagus)
How is dorsal displacement of the soft palate diagnosed?
1. history--they sudden slow down a LOT
2. endoscopy (rest or nasal occlusion or treadmill--more likely to dorsally displace)
3. radiographs (permanent)
Why have two markers on the horse with radiograph?
can account for magnification and measure the length of the epiglottis
Does a short epiglottis lead ot DDSP?