COMD 3700 Exam 2 Study Guide With Complete Questions And Correct Detailed Answers A+ Score.
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RCD 3700
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RCD 3700
What are the 5 important areas to pure tone audiometric exam? - correct answer Test equipment, test environment, the patient, the clinician, the test procedure
A clinician needs what types of test equipment for an audioetric exam? - correct answer ...
What are the 5 important areas to pure tone audiometric exam? - correct answer
Test equipment, test environment, the patient, the clinician, the test procedure
A clinician needs what types of test equipment for an audioetric exam? - correct answer
-Pure tone audiometer (diagnostic/clinical audiometer): -what the examiner uses to test the patient's
hearing
-must be calibrated correctly
The greatest concern regarding test environment is ____________. - correct answer
background noise; it can affect the results by elevating the thresholds of the patient
What are the 3 ways ambient room noise may be attenuated? - correct answer 1)
Earphone enclosures: Supra-aural headphones and cushion are mounted within a larger cup which helps
with attenuation of background noise
2) Receiver inserts: Exclusion of external noise
3) Sound treated chambers: Sound treated: some noise to be dealt with or recognized (not sound
proof); One room, two room; Single wall, double wall; If two-room, patient chamber should always be
double-walled
T/F the patient is the least unpredictable factor when conducting audiometric testing? - correct answer
False. Most unpredictable factor!
-Patients vary in age, intelligence, education, motivation, and willingness to cooperate
List some of the different patient responses that are acceptable when conducting an audiogram. -
correct answer raise hand, raise finger, signal button, verbal response
-Professor recommends signal button; fastest way to get a response
What would an audiologist put on the exam indicating the exam's reliability? - correct answer
-Usually a place on the audiogram to indicate the reliability of the exam based on patient's behavior
,Who can conduct an audiogram and is special training required? - correct answer
An audiologist. Need to be properly trained (understand test procedures/protocol)
Prior to testing what needs to be completed? - correct answer 1) Case history and
otoscopy complete prior to testing
2) Visual inspection of pinna, ear canal, and otoscopy rule out pathological conditions and potential for
ear canal collapse caused by audiometric earphones; check for cerumen
3) -Patient position during testing (monitor alertness and physical condition at all times; should be facing
slightly away from clinician/audiometer, not visible to observe visual cues from clinician, but clinician
should be able to see patients responses)
If proper instruction is not given to the patient could it affect the audiogram results? - correct answer
Instruction can affect a patient's audiogram by as much as 10 dB
-Carefully explain what you are going to do, what you want them to do, and how you want them to
respond
-Don't over instruct
How can an audiologist communicate with a patient once their headset is on? - correct answer
-Communication once the headset is on is difficult, so instruct before or through the mic
Prior to the audiogram what should the patient remove? - correct answer -Remove
glasses, hearing instruments and large earrings
In regards to the outer ear what caution should the audiologist take prior to testing when putting the
headphones on the patient? - correct answer -Make sure tragus is not pushed
inward
Is there a better ear to begin testing with? - correct answer -Start testing with
better ear first
What is the testing procedure? - correct answer -Infection control/Universal
precautions
, -clean/disinfect instruments after each use
- use disposable earphone covers or disposable earphone tips
-hand-washing
What is the purpose of audiometric testing? - correct answer -Purpose of testing is
to determine the patient's threshold at each frequency
When is the patients threshold reached during testing? - correct answer -quietest
level the patient can hear 50% of the time
What is the minimum number or responses required to determine the threshold? - correct answer
-minimum number or responses required to determine the threshold is 2 out of 3 presentations at a
single level
-Use pure tone audiometer to test hearing acuity; mark results on audiogram.
T/F When using an audiometer, the BC limits are higher than the AC limits - correct answer
False, BC limits are lower than AC limits because more power is needed to drive BC oscillator
What occurs when BC is driven at high intensity levels? - correct answer -When BC
is driven at high intensity levels, harmonic distortion can result; overdriven system @ 1000 Hz will see
output at 1000, 1500, and 2000 HZ
How can the BC test result in a negative response if the intensity levels are too high? - correct answer
-Tactile response can occur; bone oscillator moves so strongly that it moves physically and the person
can feel it moving on the side of their head (may misinterpret as puretone stimulus instead of
movement)
What are the upper and lower limits of an audiogram? - correct answer Lower
Limits: 0 to -10 dB HL
Upper Limits: AC: about 110 (75, 90, and 110) dB for air conduction
BC: 40-65 dB for bone conduction
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