Hearing Aid Dispensers Written
Exam Actual Questions and
Verified Answers
1. A large perforation of the tympanic membrane (TM) can commonly cause
how many decibels (dB) of hearing loss?
a) 10 dB
b) 30 dB (Correct Answer)
c) 50 dB
d) 70 dB
Explanation: A large perforation of the TM typically results in a conductive hearing
loss averaging around 30 dB, depending on the size and location of the
perforation.
2. What type of hearing loss is most favorable to medical treatment?
a) Sensorineural
b) Conductive (Correct Answer)
c) Mixed
d) Central
, Explanation: Conductive hearing loss is often treatable with medical or surgical
interventions, such as removal of wax, middle ear surgery, or tympanoplasty.
3. Carhart Notch appearing at 2 kHz with bone conduction testing is associated
with which condition?
a) Otosclerosis (Correct Answer)
b) Presbycusis
c) Noise-induced hearing loss
d) Meniere's disease
Explanation: The Carhart Notch at 2 kHz is characteristic of otosclerosis, reflecting
a specific sensorineural threshold shift often observed in middle-aged Caucasian
women.
4. ___ is useful to find hearing loss, and ___ & SRT are within 5 to 10 dB of each
other.
a) PTA; Speech Reception Threshold (SRT) (Correct Answer)
b) PTA; Word Recognition Score
c) OAE; PTA
d) Tympanometry; SRT
Explanation: Pure Tone Average (PTA) is used to estimate hearing loss, and SRT
and PTA are typically within 5-10 dB, providing reliable cross-checks.
Exam Actual Questions and
Verified Answers
1. A large perforation of the tympanic membrane (TM) can commonly cause
how many decibels (dB) of hearing loss?
a) 10 dB
b) 30 dB (Correct Answer)
c) 50 dB
d) 70 dB
Explanation: A large perforation of the TM typically results in a conductive hearing
loss averaging around 30 dB, depending on the size and location of the
perforation.
2. What type of hearing loss is most favorable to medical treatment?
a) Sensorineural
b) Conductive (Correct Answer)
c) Mixed
d) Central
, Explanation: Conductive hearing loss is often treatable with medical or surgical
interventions, such as removal of wax, middle ear surgery, or tympanoplasty.
3. Carhart Notch appearing at 2 kHz with bone conduction testing is associated
with which condition?
a) Otosclerosis (Correct Answer)
b) Presbycusis
c) Noise-induced hearing loss
d) Meniere's disease
Explanation: The Carhart Notch at 2 kHz is characteristic of otosclerosis, reflecting
a specific sensorineural threshold shift often observed in middle-aged Caucasian
women.
4. ___ is useful to find hearing loss, and ___ & SRT are within 5 to 10 dB of each
other.
a) PTA; Speech Reception Threshold (SRT) (Correct Answer)
b) PTA; Word Recognition Score
c) OAE; PTA
d) Tympanometry; SRT
Explanation: Pure Tone Average (PTA) is used to estimate hearing loss, and SRT
and PTA are typically within 5-10 dB, providing reliable cross-checks.
