lecture 6 - exam 1

Question 1

what problems can cerumen cause

Answer 1

impacted cerumen can give conductive hearing loss

Question 2

mechanical removal

Answer 2

most common

using metal or plastic tools

curette, loop, hooks, forceps

Question 3

irrigation removal

Answer 3

room temperature water squirted into ear

must be room temp or patients will get dizzy

Question 4

suction removal

Answer 4

removal using a suction

Question 5

when not to remove cerumen

Answer 5

ear drum perforation

middle ear infection

ear canal injury / inflammation

Question 6

when not to use irrigation removal

Answer 6

you cannot see TM

could cause serious damage to ossicles if there is a hole

Question 7

what is audiometry

Answer 7

assessment of hearing sensitivity

determines if there is hearing loss
- degree & severit
- configuration
- type

Question 8

assessment of hearing sensitivity is what

Answer 8

frequency specific

ear specific

Question 9

what info does type of hearing loss give us

Answer 9

where it is

informs treatment plan

Question 10

equipment used for audiometry

Answer 10

sound booth

audiometer & transducer

Question 11

intensity in audiometry is measured using what

Answer 11

dB HL

Question 12

what types of pure tone stimuli are used

Answer 12

continuous

pulsed

frequency modulated / warble tone

Question 13

which frequencies do we test at for air conduction

Answer 13

250-8000 Hz

mainly octaves
(250, 500, 1000, 2000, 4000, 8000)

Question 14

which frequencies do we test at for bone conduction

Answer 14

250/500 - 4000 Hz

can feel low freqs vibrating even when you can’t hear them

make sure test ear is uncovered - occlusion effect

Question 15

occlusion effect

Answer 15

your own voice is louder in your head when you plug your ears

Question 16

transducer types

Answer 16

supra-aural headphones = on ear

circumaural headphones = around ear

insert headphones

soundfield

bone oscillator = mastoid or forehead
- tests sensorineural pathway

Question 17

what type of hearing loss are we looking for w/ AC

Answer 17

conductive & sensorineural

if there is hearing loss w/ AC, then test BC

Question 18

what type of hearing loss are we looking for w/ BC

Answer 18

sensorineural

Question 19

threshold

Answer 19

lowest intensity at which a patient is able to detect pure tones

Question 20

when to test high freqs

Answer 20

aging

ototoxic monitoring

monitoring noise exposure

monitoring hearing loss from surgery

Question 21

finding the starting point

Answer 21

familiarize patient w/ stimulus at an audible level

if yes –> threshold search beings
if no –> increase level until patient responds

Question 22

threshold procedure - Hughson-Westlake

Answer 22

decrease intensity in 10 dB steps until patient stops responding
- yes = down 10

increase intensity in 5 dB steps until patient responds
- no = up 5

Question 23

how long do you repeat threshold procdedure

Answer 23

until the patient responds to 2/3 ASCENDING presentations

Question 24

when are false positives likely

Answer 24

tinnitus

bottom thresholds

during long silent periods between presentations

Question 25

when are false negatives likely

Answer 25

fakers

Question 26

audiogram axes

Answer 26

x axis = frequency (Hz)

y axis = dB HL

Question 27

unmasked AC audiogram symbols

Answer 27

right = red circle

left = blue triangle

Question 28

how are AC audiograms marked

Answer 28

marked at the intersection of the threshold & freq axes

Question 29

unmasked BC audiogram signals

Answer 29

right = red, open to right side

left = blue, open to left side

Question 30

how BC audiograms marked

Answer 30

symbols open to the line they are indicating

Question 31

masked AC symbols

Answer 31

right = triangle

left = square

Question 32

masked BC symbols

Answer 32

right = [

left = ]