Ear, Nose, Throat Flashcards

1
Q

what is the normal first part of the hearing pathway from the external ear through the middle ear?

A

air conduction (AC)

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2
Q

how does sound waves travel in AC

A

through the air and transmitted from external and middle ear to the cochlea

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3
Q

what is the phase of hearing that is an alternative pathway that bypasses the external and middle ear?

used for testing purpose

A

Bone conduction

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4
Q

how does sound travel for bone conduction?

A

vibrating fork sis placed on the head, and the bone of sull is vibrated

stimulates the cohclea directing

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5
Q

what is the senosrineural phase of hearing?

A

second part of hearing pathway that involves the cochlea and cochlear branch of CN VIII

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6
Q

what type of conduction is more sensitve in hearing loss?

A

AC>BC

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7
Q

what type of condution is more sensitive in conductive hearing loss?

A

BC>AC

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8
Q

what questions should be asked for history of the ears?

A
  • hearing loss
  • earache/ear discharge
  • tinnitus
  • vertigo
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9
Q

what are you inspecting the auricle for?

A

deformities, lumps, pits, skin lesions

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10
Q
A
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11
Q

what test evaluates for ear pain or dischage?

A

Tug Test

  • moves the auricle up and down and presses on tragus
  • press firmly over the mastoid process behind the ear
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12
Q

when would you see a positive tug test?

A

acute otitis externa

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13
Q

when would you see a negative tug test

A

Otitis media

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14
Q

what diseases do you see tenderness over the mastoid process druring the tug test?

A

Otitis media and mastoiditis

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15
Q

where is the inflammation in otitis externa

A

the ear canal is inflamemd

see wax, pus coming from the ear

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16
Q

where in the ear is inflammed with Otitis Media

A

inflammation of the fluid accumulation in the middle ear

17
Q

Don’t forget to do what during the otoscope ear exam

A

straighten the ear canal by grasping the auricle

18
Q

what angle do you insert the speculum at into the ear?

A

downward angle

19
Q

what three things do you inspect for during an otoscope?

A
  1. ear canal for d/c, foreign body, redness or swelling
  2. inspect Tm for color, cone of light, perforations
  3. Mobility of TM can be evaluated with pneumatic otoscope
20
Q

what conditions do you see decreaswed mobility of the TM

A
  1. serous effusion
  2. thickened tympanic membrane
  3. purulent otitis media
21
Q

what does perforation of the TM cause upon pneumatic otoscopy

A

no mobility of pneumatic otoscopy

22
Q

what color is a normal TM

A

pinkish/gray color

23
Q

what does the malleus lie behind?

A

the upper part of the ear drum

24
Q

What lies above the malleus

A

pars flaccida

25
Q

what are the 3 components of the TM

A
  1. lateral process of the malleus
  2. par flaccida
  3. pars tensa
25
Q
A
26
Q

where does the cone of light fan down to?

A

fans downward and anteriorly

27
Q

what is normal in the handle of the malleus

A

small blood vessels

28
Q

whispered voice test result

if the pt repeats the intial sequence correctly

A

normal hearing in ear

29
Q

whisphered test results

pt responds incorrecttly or not at all, what do you do

A

repeat that ear with a new combo of letters/ numbers

30
Q

whispered test results

pt gets 3/6 of the letters/numbers correct

A

passed hearing screening test

31
Q

whispered voice test results

less than 3/6 correct

c

A

conduct further testing using audiometry

32
Q

what should you do to the other earing during a whispered voice test

A

occlude it

33
Q

what test evaluates lateralizatoin

A

Weber test

34
Q

what does a normal weber test indicate

A

sound heard equally in both ears

35
Q

for the weber test, the sound is heard best/lateralizes to impaired ear by bone indicates

A

unilateral conductive hearing loss

BC>AC

36
Q

for the weber test, sound is heard best/lateralizes to the good ear indicates

A

unilateral sensorineural hearing loss