Prep for Stage dans la mineure

Question 1

Why are the kids being screened?

Answer 1

a) Have they been referred?
b) Do we have any background info about the kids being screened (i.e. case history)

Undetected hearing disorder could have a very negative impact on communication ability. Not all children who have significant hearing disorder are born with it. Some develop it early in childhood adn will be missed by the early screening process. School screening programs are aimed at identifying children who develop hearing loss later in childhood or whose hearing disorder is mild enough to have escaped early detection.

Question 2

What is the most important to question to ask when you first meet a client?

Answer 2

What brings you in today?

Question 3

Normal hearing is defined as audiometric zero, plus or minus two standard deviations of the mean. Thus normal sensitivity ranges from ____dB HL to ____dB HL.

Answer 3

• 10 to + 10 db HL

Question 4

Hearing sensitivity is usually defined by an individual’s _____________ of audibility to sound.

Answer 4

threshold (le seuil d’audibilité)

Question 5

What is an audiogram ?

Answer 5

An audiogram is a graph that depicts thresholds of hearing sensitivity, determined behaviourally as a function of pure tone frequency.

Question 6

A pure tone audiogram provides a picture of

Answer 6

the degree of hearing loss

Question 7

Name the three main speech frequencies :

Answer 7

1. 500 Hz
2. 1000 Hz
3. 2000 Hz

Question 8

Hearing sensitivity is measured by presenting sound through an earphone to assess hearing sensitivity. The transmission of sound through the outer and middle ear to the cochlea is by _______________.

Answer 8

air conduction

Question 9

Threshold assessment provides an indictator of the ability to hear what type of sounds?

Answer 9

faint sounds

Question 10

What is the purpose of hearing screening?

Answer 10

Separate those with normal auditory function from those that require further testing

Question 11

Screening of hearing of children in schools is usually accomplished with _____________

Answer 11

behavioural pure tone audiometry.

Question 12

Typically, the intensity level of the audiometer is fixed at

Answer 12

20 to 30 dB, depending on the acoustic environment, and responses are screened across the frequency range.

Question 13

What happens to children who don’t pass the screening?

Answer 13

They are referred to the audiologist for a complete evaluation.

Question 14

Most screening of young children also includes an assessment of

Answer 14

middle ear function

Question 15

Regardless of audiometer type there are three main components to any audiomenter. What are they :

Answer 15

1. an oscillator
2. an attenuator
3. an interruptor switch

Question 16

What does the oscillator do?

Answer 16

It generates pure tones. It is controlled by a frequency selector switch.

Question 17

What does the attenuator do?

Answer 17

It controles the intensity level of the signal (volume), unsually 5 dB steps from -10dB HL to a predifined maximum volume.

Question 18

What does the interrupter switch do?

Answer 18

It controls the duration of the signal. It is usually set to the off position for pure-tone-signals and is turned on when the presentation button is pressed.

Question 19

In pure tone audiometry, the search is for the sound intensity that produces a response from the listener about ___% of the time.

Answer 19

50%

Question 20

The zerol line running horizontally across the top of the audiogram is sound inteensity corresponing to _____________ at each of the test frequencies.

Answer 20

average normal hearing.

Question 21

Following earphone placement, you will be haring some tones or beeps. Plese respond each time you hear the sound by placing a block for as long as you hear the sound. stop responding when you no longer hear teh sound. We are interested in knowing the softes sound that you can hear, so plese respond even if you just barely hear it. What else is important to tell the patient?

Answer 21

We will be testing different tones and in both ears.

Question 22

Which ear do you start with for testing?

Answer 22

The better ear

Question 23

Which frequency do you start with and why?

Answer 23

1000 Hz because it is a relatively easy signal to perceive

Question 24

If you anticipate hearing will be normal, what intensity do you start with?

Answer 24

40 db HL

Question 25

If the patient does not respond to 40dbHL, what do you do?

Answer 25

Increase the intensity by 20 dB until a response occurs

Question 26

What is the rule for threshold search?

Answer 26

Down 10, up 5 : If the patient heaars the tone, intensity is decreased by 10 dB adn if the patient does not hear the tone, intensity is incrased by 5 dB.

Question 27

What is the threshold?

Answer 27

The lowest level at which the pateint perceives the tone 50% of the time (either two out of four or three out of six presentations).

Question 28

Once threshold has been established at 1000Hz, what do you do (3 things)?

Answer 28

1. Proceed to test the other frequencies.
2. Repeat testing at 1000Hz in the first ear tested to ensure that the response is not better now that the patient has learned the task.
3. Test the other ear in the same manner.

Question 29

Why do we use the term air conduction?

Answer 29

Because signals are presented through the air via earphones.

Question 30

Why do we uses insert earphones?

Answer 30

They have several advantages related to sound isolation and interaural attenuation.