These measures of hearing acuity describe the amount of the patient's hearing loss, determine which parts of the auditory system are involved, determine if a medical referral is needed, and predict how the patient's hearing loss may relate to his or her ability to listen and communicate

The basic function of this portion of the audiometer is responsible for producing pure tones at selected frequencies

ER-3A

The electroacoustic diaphragm is housed in a small case that prevents the possibility of temporary ear canal collapse that can occur with supra-aural earphones, reduces background noise, and reduces the need for masking the other ear Have maximum output of 110 dB.

a difference of more than 10 dB between air and bone conduction pure tone thresholds

does not have any clinical significance if the AC threshold is 10 dB better than the BC threshold

A masker is always presented to the NTE by using this

During audiometry, this modified method or technique is used in which you go down 10, up 5 until finding the patient's threshold

The basic function of this portion of the audiometer is responsible for changing the intensity of the signal

Telephonics TDH series

These can temporarily collapse or close off the cartilaginous part of the ear canal and have a maximum output of 120 dB

used in patients who do not have ear canals, who have profound hearing loss, or with active drainage from the ears

Three ways in which you describe HL are the degree of the HL, the type of HL, and ______________.

inserts 50

supra 40

This is when a patient responds when no signal is presented to them

The basic function of this portion/accessory of the audiometer is to convert energy from electrical energy to acoustic energy and they determine how the signal will be delivered to the patient's ear

Extended high-frequency EHF - Sennheiser HDA200

These are used for patients with extended high-frequency hearing loss such as ototoxicity monitoring or with tinnitus patients

These symbols should not be connected in regions where there are no responses

10-15 normal

16-25 normal for adults, slight for children

26-40 mild

41-55 moderate

56-70 moderately severe

71-90 severe

90+ profound

This occurs when the patient fails to respond to a signal they may have really heard or a signal that you would expect them to hear

The basic function of this portion of the audiometer is responsible for directing the signal to the desired location/ear

when speakers are used for testing

patients who cannot tolerate inserts or supra-aural

both ears receive the stimulus, but cannot test ear specific

This occurs in individuals with reduced elasticity in the cartilaginous portion of the external ear canal when supra-aural earphones are used.

It will reduce the intensity of the AC pure tones but not the BC pure tones and can result in erroneous ABGs.

The effects of this are usually seen in the mid to high frequencies

True or False - HL has a greater impact on children than on adults that is why the normal range for adults is different from children

This was designed to simplify the representation of hearing loss across frequencies so the threshold of the audibility curve is normalized; in other words, the threshold of the audibility curve is straightened out by creating a 0 dB HL for each frequency that is equal to the average amount of dB SPL needed for normal-hearing listeners to hear each frequency when presented by AC

The following formula is used for the purpose of this or answer this way = what is missing from the formula (X).

n dB SPL = dB HL (dial reading) +/- X

Radioear B-17

sends vibrations mechanically to the skull (anywhere), cochlea

250-4000 Hz

Maximum output of 70-80 dB in the high frequencies

Prone to vibrotactile responses in the low frequencies

This refers to the reference value as the threshold of the individual patient

when using this specific decibel scale you must always know the patient's threshold

a patient with a 40 dB HL threshold, presentation level at 60 dB HL, that would have a 20 dB on this decibel scale

Average of thresholds at 500, 1000, and 2000 Hz

can be a two-frequency, three frequency, or four frequency