ENT Flashcards

1
Q

What are the otolith organs?

A

Utricle and saccule and semi-circular canals

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2
Q

What do the otoconia contain?

A

Ca carbonate crystals

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3
Q

What stimulates the vetibulo-occular reflex?

A

Semi-circular canals

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4
Q

What is contained within the cochlea?

A
  • Scala media (endolymph)

- Scala tympani and Scala vestibuli (perilymph)

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5
Q

What direction do they sterocilia bend to initiate depolarisation?

A

Towards the longest

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6
Q

What do the utricle & saccule detect?

A

Linear acceleration

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7
Q

What is contained with the SSC?

A
  • Cupula in the ampulla

- Deflection by movement of perilymph

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8
Q

What is the function of the outer and inner hair cells in the Organ of Corti?

A

Outer: modulate sound
Inner: receive sound and send info back to brain

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9
Q

Presentation of Squamous Papilloma?

A

-2 peaks of incidence

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10
Q

HPV type in SCC?

A

16

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11
Q

Salivary gland: acute bilateral symptoms

A

Mumps

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12
Q

Salivary gland: acute unilateral

A

Oral infection

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13
Q

Salivary gland: recurrent unilateral symptoms, pain and swelling, worse on eating

A

Sialolithiasis (stones)

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14
Q

Bacterial causes of Otitis Externa?

A

Staphylococcus aureus
Proteus spp
Pseudomonas aeruginosa

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15
Q

Fungal causes of Otitis Externa?

A

Aspergillus niger

Candida albicans

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16
Q

Herpetic whitlow?

A

Herpes simplex virus of the finger

17
Q

What is the main difference between Vestibular Neuronitis and Labyrinthitis?

A

Larbrinitis has associated tinnitus and hearing loss

18
Q

Management of Meniere’s?

A

Salt restriction and Beta-histine

19
Q

What is the most common auditory symptom

in Migrainous Vertigo?

A

Phonophobia

20
Q

“Aural fullness”

A

Meniere’s

21
Q

“Tear drop” sign on CT

A
  • Orbital floor fracture

- “Blow out” fracture of medial wall and floor

22
Q

Imaging of choice in trauma to look at the sinuses?

A

CT

23
Q

Imaging of choice to look at the auditory meatus and nerves?

A

MRI

24
Q

Centor Criteria

A

History of fever
Tonsillar exudates
Tender anterior cervical adenopathy
Absence of cough (cough is viral rather than bacterial)

25
Q

What are the investigations of choice in dysphagia?

A
  1. Endoscopy
  2. Ba swallow if no abnormality
  3. Malignancy: stage with CT or MRI
26
Q

What are the investigations of choice in foreign bodies?

A

x-ray

27
Q

What is US used in ENT?

A
  • Investigation of neck lumps
  • Investigation and FNA of thyroid lumps
  • Investigation of salivary gland disease
  • Investigation of inflammatory masses, particularly in children to identify an abscess
28
Q

What is the difference between benign and malignant lymph nodes?

A

Benign: oval
Malignant: round

29
Q

What imaging is used in neck and chest cancer staging?

A
  • CT for larynx

- MRI for skull base

30
Q

Imaging in sensori-neural deafness?

A
  • MRI

- Vestibular Schwannoma

31
Q

Imaging in conductive deafness?

A
  • CT

- Cholesteatoma

32
Q

What is contained within the carotid space?

A

Carotid artery
Jugular vein
Cranial & sympathetic n.
Lymph nodes

33
Q

Rhinitis classifications for intermittent and persistent?

A

Intermittent:4days a week AND >4weeks duration

34
Q

Treatment for nasal polyps?

A
  • Oral then topical steroids

- If no better, surgery

35
Q

Acute Rhonisinusitis symptoms?

A

Facial pain
Discharge
Nasal blockage

36
Q

Enlarged adenoid in a teenage boy?

A

Angiofibroma

37
Q

Name a decongestant

A

Pseudoephedrine