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ENT > Viral labyrinthitis > Flashcards

Viral labyrinthitis Flashcards

1
Q

What is labyrinthitis?

A

An inflammatory disorder of the membranous labyrinth,

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2
Q

What parts of the ear does labyrinthitis affect?

A

Both the vestibular and cochlear end organs

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3
Q

What type of labyrinthitis is the most common?

A

Viral labyrinthitis

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4
Q

What is the more common presenting age of someone with viral labyrinthitis?

A

40-70 years

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5
Q

How does viral labyrinthitis present?

A

vertigo
nausea and vomiting
hearing loss
tinnitus

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6
Q

How is the vertigo in someone with viral labyrinthitis affected by movement?

A

Not triggered by movement but exacerbated by movement

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7
Q

What can precede or be concurrent with viral labyrinthitis?

A

Symptoms of upper respiratory tract infection

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8
Q

How is the onset of symptoms of viral labyrinthitis described?

A

Acute onset

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9
Q

What are the main signs of viral labyrinthitis?

A
  • spontaneous unidirectional horizontal nystagmus towards the unaffected side
  • sensorineural hearing loss
  • abnormal head impulse test
  • gait disturbance
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10
Q

How can the sensorineural hearing loss be shown in someone with viral labyrinthitis?

A

Via Rinnes and Webers

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11
Q

What can an abnormal head impulse test signify in someone with viral labyrinthitis?

A

An impaired vestibulo-ocular reflex

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12
Q

How can the gait be affected in someone with viral labyrinthitis?

A

The patient may fall towards the affected side

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13
Q

How can viral labyrinthitis be diagnosed?

A

History and examination

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14
Q

What is the management of viral labyrinthitis?

A

Episodes are usually self-limiting

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15
Q

What medication can be given to reduce the sensation of dizziness in someone with viral labyrinthitis?

A

Prochlorperazine or
Antihistamines

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16
Q

What does viral labyrinthitis need to be differentiated from?

A

vestibular neuritis

17
Q

What is the difference between vestibular neuritis and viral labyrinthitis?

A

Vestibular neuritis: only the vestibular nerve is involved

Labyrinthitis : both the vestibular nerve and the labyrinth are involved

18
Q

What does viral labyrinthitis usually present with that vestibular neuritis doesn’t?

A

Both vertigo and hearing impairment.

19
Q

What is the difference between Menieres and viral labyrinthitis?

A

Hearing loss resturns between episodes of menieres whereas it doesn’ with viral labyrinthitis

ENT (29 decks)

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