Dermatology - Otitis Externa and Media Flashcards
What are the predisposing factors to otitis externa?
- stenosis
- hair in canals
- pendulous ears
- swimmer’s ear
- overactive glands
- polyps and neoplasms
What are the clinical signs associated with otitis externa?
- pruritis, head shaking, exudate, odor, hearing loss
- erythema, swelling, crusting, pain, etc.
What is the main cause of otitis externa in dogs?
allergies
What is the main cause of otitis externa in cats?
otodectes
What can you use to clean the ears when you can see an intact pars tensa?
- ceruminolytic to emulsify wax/lipids
- cleaning solutions to remove debris
- drying agents
What can you use to clean the ears when you cannot see an intact pars tensa?
normal saline
What are the indications for surgery with chronic otitis externa?
- severe calcification of cartilage
- irreversible soft tissue pathology
- bone changes in tympanic bulla
- persistant otitis media
What are the clinical signs associated with otitis media?
- Horner’s syndrome
- facial paralysis
- vestibular signs
When is surgery indicated for otitis media?
- medical therapy ineffective
- ear canals occluded or stenotic
- mass in outer or middle ear
What are the clinical signs associated with primary secretory otitis media?
- head tilt
- neck pain
- air scratching
- facial paralysis, vestibular signs
How is primary secretory otitis media diagnosed?
- bulging pars flaccida
- myringotomy
How is primary secretory otitis media treated?
myringotomy and middle ear flush
Who is predisposed to primary secretory otitis media?
cavalier king charles spaniels
