Amp I Final Flashcards
If I leave the threshold of compression alone, but reduce the gain for loud sounds (leaving the gain for soft sounds alone), the compression rate will:
A. stay the same
B. increase
C. decrease - incorrect
D. improve
Which of the following is a hearing aid solution for patients who produce excessive sweat that frequently damage their hearing aids?
hearing aid dryer
What does leveling or calibrating the real-ear prob mic system ensure?
That the SPL measured at the probe tube mic and at the reference mic are the same
Hard molds are best when pinna texture is ___________.
soft
T/F: Probe mic system can make fine-tuning changes tot he programming in the hearing aid
False
T/F: The probe mic system can verify audibility for a hearing aid fitting
True
T/F: Probe mic system can measure attenuation of a hearing protection device
True
T/F: Probe mic system can verify some hearing aid features such as directionality and frequency shifting
True
Name three aspects in a child’s life that you want to know in order to provide him the best hearing health care.
- How is hearing loss impacting him at home and school?
- What sports and extracurricular activities is he involved in?
- Understand communication barriers
T/F: Both DSL and NAL are validated prescriptive approaches for estimating optimal gain and output for hearing aid fitting
True
T/F: DSL is only appropriate for pediatric patients
False
T/F: DSL’s fitting rationale focuses on optimizing speech intelligibility and loudness comfort
False
What is the first step to take when a patient complains of hearing aid feedback?
A. perform otoscopy
B. perform real ear measures
C. perform electroacoustic analysis – incorrect
D. replace the receiver
T/F: real-ear probe mic system can only be used t check the amplification of hearing aids
False
How is feedback generated?
Amplified sound from the hearing aid is picked up by the mic and re-amplified over and over again.
What can you do to eliminate feedback in a hearing aid fitting?
Enable phase cancellation
Why would RECD results be negative?
The individual’s ear builds up less sound pressure than a coupler
T/F: CROS hearing aids amplify signals and wirelessly transmits to the good hearing ear
False
T/F: In a CROS system, a mic (and transmitter) is worn on the ear that cannot benefit from amplification
True
What is the appropriate fitting choice for single sided deafness?
BAHA
T/F: Adaptive directional mics switch from omni directionality to cardioid directionality only
False
What are digital feedback reduction techniques?
Phase cancellation
Notch filtering
What are benefits of obtaining self-reported outcome measures?
- Serve as counseling tool reporting to patients how they are doing compared to average
- Measure real-world benefits and satisfaction of hearing aid use
- Great way to measure quality of service in the current patient-driven health care model
What subjective measure addresses satisfaction as an outcome of hearing aid fitting?
IOI-HA
If you have an individual with a positive RECD, it means that when you got the dB HL thresholds through insert earphones, the actual SPL being delivered to the ear drum was ___________________.
A. lower than average
B. higher than average
C. equal to average
D. zero dB SPL – incorrect
Real ear measure that shows you the output of the hearing aid at the patient’s eardrum
A. RECD
B. REUR <== ?
C. REAR
D. REOR – incorrect
What do comply soft wraps do?
Add cushion to earmold for tighter seal, temporary
What earmold material is recommended for pediatric patients?
soft material
T/F: Toddlers must be able to remain quiet and calm for up to 10 mins while you complete speech mapping (REAR) and fine-tuning.
False
You’re handed an audiogram and hearing aid coupler gain curve for a 60 dB input signal. Can you comment about whether this hearing aid gain is adequate for this individual?
A. There is nothing you can say with this limited data
B. Yes, you’ll be able to tell whether this is an appropriate hearing aid for soft, moderate, and loud input levels — incorrect
C. using the 1/3 and 1/2 gain rule, you could tell this person whether the hearing aid responds appropriately for conversation level inputs
D. Yes, the hearing aid can be judged to be appropriate if the amount of gain at each frequency is equal to the hearing threshold at that frequency
T/F: Amount of amplification applied to the input signal is referred to as gain
True
Shell earmold is recommended for what type/degree of hearing loss?
Severe-profound hearing loss
What does verification in hearing aid fitting refer to?
Confirming that the hearing aid provides the prescribed amplification
Follow-up session for first-time hearing aid user and her partner. Patient reports she cannot hear partner while in different rooms and patient is not hearing everything clearly in restaurants. What should be reviewed/discussed?
Realistic expectations
HA-2 coupler is used to measure the acoustic pressure generated by an ITE hearing aid
False
What is a component of hearing aid fitting validation?
Assessing the effectiveness of hearing aid settings in various listening environments
Lost dome. What do you do first?
Perform otoscopy
Why should otoblock be placed just beyond the second bend of the ear canal during preparation for taking an ear impression?
Results in a complete impression of the canal cross section
If a patient has a bilateral symmetrical hearing loss, which ear should you choose for hearing aid fitting?
Ear with greater perceived hearing difficulty
What frequencies does the venting technique affect?
Up to 1000-2000 Hz
T/F: Unless contraindicated, it is always recommended to have at least a small vent in the earmold
True
T/F: OTC hearing aids are considered a new class of devices
True
Hearing aids with directional mics reduce the SNR of speech occurring in a noisy background
False
T/F: Transducer that converts electrical energy to acoustic energy in the hearing aid is amplifer
False
What is the recommendation re: directional mics with pediatric patients?
Not recommended
May reduce amount of incidental hearing
May not hear warning sounds from environment
