Otology Flashcards Preview

Systems 2 - Head and Neck > Otology > Flashcards

Flashcards in Otology Deck (22):
1

What is tinnitus?

Any perceived sound that does not have an external stimulus

2

What is the pathology of tinnitus?

No directly treatable pathology in the majority of cases but hearing loss and stress are important contributing factors

3

What is the differential diagnosis for vertigo?

Benign postural vertigo
Menieres Disease
Migraine
Vestibular neuritis/labyrinthitis

4

What is benign postural vertigo?

Dislodged otoconia in semicircular canals

5

What are the key features of benign postural vertigo?

Vertigo (dizziness) precipitated by certain movements lasting a few seconds

No associated symptoms

6

What is the test for benign postural vertigo?

Dix-Hallpike test

7

What is the treatment for BPV?

Epley manoeuvre

8

What is the pathophysiology of Menieres disease?

Endolymphatic hydros (overproduction)

9

What are the clinical features of Menieres Disease?

Spontaneous vertigo, Unilateral hearing loss
Fluctuating, progressive hearing loss

Duration: hours
Frequency: every few days/weeks/ months

10

What is the treatment for Meniere's Disease?

Betahistine
Intratympanic dexamethasone/gentamicin

11

What is the pathology of vestibular neuritis/labyrinthitis ?

Reactivation of latent HSV infection of vestibular ganglion

12

What are the clinical features of labyrinthitis?

Spontaneous vertigo with no associated symptoms

Duration: ays
Frequency: a few episodes

13

What are the treatments for labyrinthitis?

Acute - vestibular sedatives

Chronic - vestibular rehabilitation

14

What investigations are available to test auditory range and tympanic membrane?

Pure tone audiogram
Tymapnogram

- Type A - normal
- Type B - immobile tympanic membrane
- Type C - middle ear low pressure

15

What disorders may occur in the outer ear?

Auricular haematoma
Foreign body
Otitis externa

16

What can otitis externa be a sign of?

Internal auricular malignancy

17

What disorders may occur in the middle ear?

Otitis media with effusion
Chronic supperative otitis media

18

What can cause chronic supperative otitis media?

1. Cholesteatoma
2. Perforated tympanic membrane

19

What complications may arise from chronic supperative otitis media?

Tympanosclerosis
Otosclerois

20

What disorders may occur in the inner ear?

Prebyacusis (age related hearing loss)
Noise induced hearing loss
Ototoxic medication
Infection
Acoustic Schwannoma

21

What is facial plasy?

Lower motor neurone facial weakness

22

What causes of facial palsy are there?

Intratemporal - cholesteatoma

Extratemporal - parotid gland tumour