DERMATOLOGY 5

Question 1

otitis is ALWAYS secondary. what are 7 primary triggers?

Answer 1

1. Foreign bodies
2. Parasites
3. Hypersensitivity
4. Keratinisation disorders
5. Neoplasia
6. Inflammatory polyps
7. Endocrinopathies

Question 2

otitis is ALWAYS secondary. what are 4 predisposing factors??

Answer 2

1. Conformation
   (Hairy, Narrow, Pendulous, Glandular)
2. Environment (heat/humidity)
3. Iatrogenic
4. Swimming

Question 3

otitis is ALWAYS secondary. what are 5 perpetuating factors??

Answer 3

1. Decreased cell migration
2. Epidermal/dermal/glandular hyperplasia
3. Fibrosis
4. Ear canal stenosis & mineralisation
5. Otitis media

Question 4

95% of ear infections are which 3?

rather than culture, you can diagnose these 3 using _________

Answer 4

malassezia
staphylococci
pseudomonas [more pain& chronic]

diagnose using cytology

Question 5

otoscope technique?

Answer 5

use pinna to bend the vertical canal horizontally to advance with the horizontal canal
then advance otoscope
[vertical canal can move. horizontal canal has too much muscle and cannot, therefore must move vertical canal]

Question 6

what are the 2 broad techniques for ear cleaning?

Answer 6

manual cleansing
ear flushing

Question 7

which of the 2 broad techniques can be used for horizontal ear canal and middle ear cleaning?

Answer 7

ear flushing only

Question 8

what are the 3 categories of ear cleansers

Answer 8

ceruminolytics
detergents
antiseptics

Question 9

tris EDTA is only useful in high concentrations. which of the 3 categories of ear cleansers is tris EDTA?

Answer 9

antiseptic

Question 10

what are 4 meds with anti-biofilm activity?

Answer 10

– Chlorhexidine
– TrisEDTA
– 2% n-acetyl cysteine
– Hypochlorous acid