Hearing Loss and Tinnitus Flashcards Preview

ENT > Hearing Loss and Tinnitus > Flashcards

Flashcards in Hearing Loss and Tinnitus Deck (23):
1

What is presbyacusis?

Age-related hearing loss due to accumulation of environmental noise toxicity

2

Which frequency of sound is lost first in presbyacusis?

High frequency

3

What is the treatment for presbyacusis?

Hearing aids

4

What decibel range is 'normal' on pure tone audiometry?

0-20dB

5

At what decibel of hearing might you consider grommets in a child?

Below 30dB

6

At what decibel of hearing might you consider cochlear implants in an adult?

Below 90dB

7

What might be the findings on audiometry and tympanometry in a patient with perforation of the tympanic membrane?

Audiometry = Conductive hearing loss
Tympanometry = No movement of the tympanic membrane i.e. appears flat

8

List some drugs which might cause sensorineural hearing loss

Streptomycin, vancomycin, gentamicin, vinca alkaloids, chloroquine, hydroxychloroquine

9

What diagnosis should you think of when there is unilateral sensorineural hearing loss?

Acoustic neuroma

10

Which is more common, sensorineural or conductive hearing loss?

Sensorineural

11

What does a flat line on tympanometry suggest?

Fluid in the middle ear

12

What is the inheritance pattern of otosclerosis?

Autosomal dominant

13

What are the symptoms of otosclerosis?

Conductive hearing loss
Tinnitus
Vertigo
'Flamingo tinge' to the ear drum due to hyperaemia
'Cahart's notch' on audiometry - a dip at 2kHz

14

What is the (probable!) underlying pathology in Meniere's disease?

Dilatation of the chambers which carry endolymph in the membranous labyrinth

15

What is the characteristic triad of Meniere's disease?

Bilateral sensorineural hearing loss
Tinnitus
Vertigo

16

Where might you expect the pathology to be if a patient complains of tinnitus which is ringing, hissing or buzzing?

Inner ear or central

17

Where might you expect the pathology to be if a patient complains of tinnitus which involves popping or clicking sounds?

Middle or external ear, or palate

18

What pathology might you expect if a patient complains of tinnitus which is pulsatile?

Vascular causes
Anxiety
Benign intracranial hypertension

19

What diagnosis must be excluded in unilateral tinnitus?

Acoustic neuroma

20

Typically how long does the dizziness last in benign paroxysmal positional vertigo?

Less than 1 minute, usually 10-20 seconds

21

If both bone and air conduction are affected on audiogram, what is the likely problem?

Sensorineural hearing loss

22

What will an audiogram show in conductive hearing loss?

Bone conduction is better than air conduction

23

What will audiography show in a mixed hearing loss picture?

Bone conduction and air conduction reduced on the affected side, but air conduction 'worse' than bone conduction