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1MB - 3MB OSCEs > ENT (audiometries) > Flashcards

ENT (audiometries) Flashcards

1
Q

What does the following symbol: O mean?

A

Air conduction: Right ear unmasked

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2
Q

What does the following symbol: △ mean?

A

Air conduction: Right ear masked

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3
Q

What does the following symbol: X mean?

A

Air conduction: Left ear unmasked

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4
Q

What does the following symbol: ▢ mean?

A

Air conduction: Left ear masked

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5
Q

What does the following symbol: < mean?

A

Bone conduction: Right ear unmasked

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6
Q

What does the following symbol: [ mean?

A

Bone conduction: Right ear masked

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7
Q

What does the following symbol: > mean?

A

Bone conduction: Left ear masked

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8
Q

What does the following symbol: ] mean?

A

Bone conduction: Left ear masked

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9
Q

What is the hearing threshold for normal hearing?

A

Can hear quiet sounds of less than 20dB

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10
Q

What is the hearing threshold for mild hearing loss?

A

Hearing loss between 20 – 40dB

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11
Q

What is the hearing threshold for moderate hearing loss?

A

Hearing loss between 41 – 70dB

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12
Q

What is the hearing threshold for severe hearing loss?

A

Hearing loss between 71 – 95dB

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13
Q

What is the hearing threshold for profound hearing loss?

A

Hearing loss over 95dB

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14
Q

Air-bone gap is found in which conditions?

A

Conductive or mixed hearing loss attributed to outer- and/or middle-ear diseases such as otitis externa, tympanic membrane perforation, interruption or fixation of the ossicular chain, and chronic suppurative otitis media

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15
Q

Interpret the following audiogram

A

Normal hearing

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16
Q

Interpret the following audiogram

A

Sensorineural hearing loss (right ear)

17
Q

Interpret the following audiogram

A

Conductive hearing loss (right ear)

18
Q

Give examples of sensorineural hearing loss

A

Vascular, viral, inflammatory or immune-mediated causes
Noise-induced hearing loss
Presbyacusis
Vestibular schwannoma

19
Q

Give examples of conductive hearing loss

A

Any obstruction to the ear canal (e.g. wax, foreign body, furuncle, oedema)
Perforation of tympanic membrane
Fluid in the middle ear (e.g. glue ear, otitis media)
Any disruption of ossicles (e.g. trauma)

20
Q

Interpret the following audiogram

A

Presbyacusis - bilateral and symmetrical hearing loss above 2000Hz. Overall down-sloping line representing impaired hearing at higher frequency sounds

21
Q

Interpret the following audiogram

A

Noise-induced hearing loss - notch at 4000 Hz

22
Q

Interpret the following audiogram

A

Meniere’s disease (right ear) - low-frequency sensorineural hearing loss.

23
Q

Interpret the following audiogram

A

Otosclerosis (right ear) - conductive hearing loss with loss in bone conduction at 2000 Hz (referred to as Carhart’s notch)

1MB - 3MB OSCEs (12 decks)

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