Ear disease and Hearing loss Flashcards Preview

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Flashcards in Ear disease and Hearing loss Deck (14)
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1
Q

Types of hearing loss

A

Conductive
Sensorineural
Mixed
Central

2
Q

Audiogram

A
Horizontal frequency (normal 20-20000)
Vertical decibels. 

0 is the softest sound someone with normal hearing can hear, greater than 20dB will be mild and so on

3
Q

Cholesteatoma

A

Skin in the middle ear

4
Q

What are some ear examination techniques

A
otoscopy: 
Whisper test:
tuning fork: weber test and rinne test
neurological tests, cranial nerve, cerebellar:
General:
5
Q

Conductive hearing loss causes

A

Middle: Otitis media, cholesteatoma, tumours, otosclerosis
Canal: stenosis, wax, exostoses (surfer’s ear)

6
Q

Otitis media (with effusion)

A

Children 1-4; eustachian tube dysfunction; infection/inflammation; negative pressure; effusion

7
Q

Mastoiditis

A

Is a medical emergency, and hearing loss is secondary

8
Q

Tympanic membrane perforation

A

as a result of otitis media, or trauma.

9
Q

Microtia/ Atresia

A

Maximum conductive haring loss, blocked ear?

10
Q

Sensorineural

A

So many causes, can be congenital, or acquired such as noise induced, infection, menieres

11
Q

Weber test

A

Hit tuning fork and place in the middle of and on top of the head
Ask where it is loudest

12
Q

Rinne test

A

Hit the tuning fork and place in front of ear, and then onto the mastoid process. Ask which is louder

13
Q

Weber test results

A

Normal is if sound is heard equally in both ears.

If the sound is heard best in the abnormal ear, it is a conductive hearing loss. This is due the the affected ear only receiving information from bone conduction and is thus perceived as louder.

If the sound is best on the normal ear, is sensorineural. this is due to the side with loss will not receive the bone conduction as well

14
Q

Rinne test results

A

Normal rinne would be louder in front of ear than on mastoid

Negative Rinne: Conductive hearing loss would have it louder through bone conduction, so on the mastoid process on the affected ear.

With a sensorineural will show a positive result, but the sound will be diminished. Will be heard longer in air conduction than bone conduction