Phonemes, Peds considerations, Audiometry

What is the most common birth defect?

Hearing loss

What is the 1-3-6 rule for pediatrics?

• screen for hearing loss within one month

• diagnose the hearing loss within three months

• begin treatment of hearing loss within six months

What is a minimum response level?

the lowest level they respond to sound

What is audiometry?

measurement of the range of sensitivity of a person’s sense of hearing

What is the goal of pure tone audiometry?

• detect a hearing loss

• determine the type of hearing loss

• determine the degree of hearing loss

• determine the configuration of hearing loss

What is air conduction testing?

transmission of sound waves to the inner ear via the EAM, TM adn ME space (air filled areas)

How is air conduction testing administered?

insert headphones or supra aural headphones

What is bone conduction testing?

conduction of sounds to the inner ear via the mastoid bone

How is bone conduction testing administered?

bone oscillator

What is air conduction assessing?

the function of the entire peripheral hearing mechanism, OE ME and IE

What is bone conduction assessing?

only the function of the IE it bypasses the OE and ME

What are the frequencies that we are capable of testing?

125 Hz - 8000 Hz

What frequencies do we typically test?

250, 500, 1000, 2000, 4000, 6,000, and 8,000

What degree of hearing loss is up to 25 dB in adults?

normal

What degree of hearing loss is 15-25 dB in children?

slight

What degree of hearing loss is 26-40 dB in adults?

mild

What degree of hearing loss is 41-55 dB in adults?

moderate

What degree of hearing loss is 56-70 dB in adults?

moderately-severe

What degree of hearing loss is 71-90 dB in adults?

severe

What degree of hearing loss is 91+ dB in adults?

profound

What does WNL mean?

within normal limits

What color and symbol is given to the right ear?

red, circle

What color and symbol is given to the left ear?

blue, x

What stimulus level do we start at if the patient has no reports of hearing loss?

30 dB HL

What stimulus level do we start at if the patient has reported hearing loss?

50 dB HL

What is the order of frequency testing?

start with 1000 Hz ascend through 8000 Hz then recheck 1000 Hz then descend through 250 Hz

What is another name for the Hughson-Westlake Method?

ten down, five up

What are we trying to find when using the Hughson-Westlake method?

threshold

When do we stop testing with the Hughson-Westlake method?

if the patient responds to a certain level 2/3 times

What frequencies do we use to calculate the pure tone average?

500, 1000, and 2000

Which ear do we calculate the pure tone average for?

each ear

What type of rounding occurs with PTA?

round up to the next whole number

What do we use the PTA as a guide for?

where to start other tests

What does the PTA give us an idea for?

how well they may hear speech

What should the PTA match?

the SRT

How do you calculate the PTA?

add up the 500 Hz 1000 Hz and 2000 Hz signals and divide by three then round up