CSD FINAL 2

What hertz do humans hear?

20-20,000 hz

What sound travels the best through

Solid

What education does a audiologist need

Clinical doctoral degree

Where are outer hair cells located?

The Inner ear

Where does the eustachian tube run to?

From the middle to the nasopharynx and allows for fluid drainage

How does the conversion of sound from outer to inner ear?

It starts acoustically in the inner ear, it becomes mechanical, then in the cochlea and becomes hydraulic, then through the nerves, with becomes electrical energy.

What is the response to the cochlear in response to 85 db

Muscles of the middle ear contract to protect the cochlear

WHAT ARE THE FUNCTIONS OF THE OUTER EAR

Protective mechanism. It funnels sound into the ear canal, and it helps with localizing sound, but it does not transfer any hydraulic energy(Hydraulic energy is in the cochlea).

Air conduction alone can only determine the degree of hearing loss

True(cannot determine type)

AIR CONDUCTION TESTING WITH COLLAPSING CANALS. HOW DO YOU DO IT.

Insert earphones

IF you have your bone conduction within 10, it hugs the air conduction symbols. The hearing loss is sensory neural if there is an air-bone gap. Then the answer is a mixed hearing loss or air-bone hearing loss. (SO IMPORTANT REMEBER AND YOU WILL BE GOOD)

****ING REMEBER THIS KEEP STUDY IT SO IT STAYS IN YOUR HEAD

30 dbs air bone gaps, normal bone conduction responses is?

Conductive hearing loss.

Bone conduction in sensorial hearing loss must be within how many dbs?

10 dbs

A conductive hearing loss is where

Outer or inner ear

A conductive hearing loss is typically correctable with?

Medical intervention

75 db is what degree of hearing loss

Severe

WHAT ARE THE CAUSES OF CONDUCTIVE HEARING LOSS

Any outer ear pathology or inner ear pathology. Ototoxic drugs causes a sensory hearing loss not conductive

Suppurative otitis media occurs with?

Pus-like thick bacterial fluid

Atresia coincides most with?

Microtia

Military noise exposure can cause an acoustic trauma resulting in noise-induced hearing loss. The question will ask about sudden hearing loss. Which is?

False

Noise-induced noise notch is initially present at which frequencies?

4,000 Hz

Body-worn hearing aid is best for which patients?

Profoundly deaf population.

Behind the ear Hearing aids are best for what?

Moisture issues excessive cerumen production

Best candidate for hearing aids?

Downward sloping and high motivation

Benefit of a digital hearing aid?

Sound quality is more natural, better technology, faster processing.

Most appropriate hearing aid for a child

Behind the ear heating loss. Any child with ear hearing loss gets behind the ear hearing aids.

Advantages of a binaural amplification

Better sound location, less volume requirement, better resolution in noise, avoids auditory deprivation.

parts of a hearing aid and what they do

Microphone, Amplifier, battery, volume control, Receiver.

WHAT IS AN FM SYSTEM

Designed to improve the signal-to-noise ratio. Design to hear the speaker over the background noise  

Does mapping matter for patient performance

YES

Parts of a cochlear implant and what they do

Microphone, speech processor, the electrode array

Deaf activist arguments regarding a cochlear implant

They don't like it

How young can a child be to a candidate for CI

1 year old/12 months old

What is the best candidate for cochlear implant

child diagnosed at birth with hearing aid but they did not work

Hearing aids vs CI's

Hearing aids stimulate the outer inner ear. Implants deliver electoral impulses into the cochlea

Where does the CI get implanted

The electrode array gets implanted into the cochlea

Surgical risk of CiS

Brain Damage is not a surgical Risk

The order of the middle ear bones, ossicles, from the eardrum to the oval window

Malleus, incus, Stapes