Ear Disease of the Dog and Cat Flashcards
What are the four types of factors to consider when approaching a case of otitis externa?
Primary, secondary, predisposing, perpetuating
What is the most common cause of otitis externa?
Allergic skin disease
Describe two perpetuating factors of otitis externa
Sensitvity to inflammation and will up-regulate their synthetic activity with minimal stimulus
Excessive production and accumulation of cerumen and ear canal discharge
List three changes that can occur with chronic proliferative otitis externa.
Excessive granulation tissue
Scarring, stenosis and deformity of the ear canal
Calcification of the cartilage
Describe the discharge of otitis externa
Ceruminous
Profuse foul smelling purulent yellow-green
Dark and tarry
List four neurological signs that may be seen with otitis media/interna
Facial nerve paralysis
Horner’s syndrome
Hearing loss (adapt to hide this)
Head tilt, deafness, ataxia, strabismus and nystagmus
List ? diagnostic tests used in the investigation of ear disease
Cytology of ear discharge
Culture and susceptibility of ear discharge
Radiography/CT of the tympanic bullae where middle ear disease is suspected
Which substance is produced more when there is inflammation due to chronic ear disease?
Cerumen
List three endocrine diseases that can cause recurrent otitis externa
Hypothyroidism, hyperadrenocorticism and sex hormone imbalances
List three medications you can use to treat pseudomonas
PCMX (Parachlorometaxylenol)
Marbofloxacin/orbifloxacin
Gentamicin
How often should you preventatively clean ears?
1 to 2 times per week
What is the name of the ear mites that affect both cats and dogs?
Otodectes cynotis
Name two treatments that are licensed for ear mites in cats and dogs
Selamectin and moxidectin
Which ages of cats are usually affected by polyps?
5 months to 5 years
What drug may you use to control inflammation in aural haematomas?
Glucocorticoids
