California Hearing Aid Dispenser Written Prep UPDATED ACTUAL Questions
and CORRECT Answers
noise-induced hearing loss
NIHL
-HL is greatest at 4000 Hz to 6000 Hz with a slight recovery at 8000 Hz
Abnormal condition within the labyrinth of the inner ear that can lead to a
progressive loss of hearing. The symptoms are dizziness or vertigo, hearing loss, and
tinnitus.
Also called endolymphatic hydrops because of excess production of endolymph
- Can be dormant for long periods of time, someone with this loss should be fit with
Meniere's disease
multiple memories as HL fluctuates
-HL is more pronounced in low frequencies
-Results from: head trauma, infection, degeneration of IE, allergy, or occasion a
tumor (but usually from unknown cause)-Alcohol, smoking, drugs, and caffeine
increase symptoms
, Cyst-like mass composed of epithelial cells and
cholesterol occurring in the middle ear; may be
associated with chronic otitis media.
- Can erode mastoid bone and ossicles
-Produces conductive HL
-Foul-smelling
- Flat tympanogram
cholesteatoma
-Elevated/ absent reflexes
-Elevated MCL & UCL
- Small ABG
Symptoms:
Otorrhea, HL, Vertigo, Tinnitus pain, head aches,
facial nerve pain paralysis, ET dysfunction
A conductive HL usually requires more Gain (greater acoustic power)
__________from a hearing aid than SNHL.
AC: Flat to sloping
WR: Weak to excellent
ABG: Present, but not equal at all frequencies
Mixed HL summary on classification Tympanogram: flat or abnormal shaped
Recruitment: slight or none, exceptions are common
Acoustic reflexes: absent
Tinnitus: Varies case by case
AC: Sloping
WR: Weak to good
ABG: None
SNHL Summary on classification Tympanogram: Normal
Recruitment: almost always present
Acoustic reflexes: present if HL is less than 70 dB
Tinnitus: Ringing or hissing if present
AC: Flat to gentle rising
WR: Excellent
ABG: Present
Conductive HL Summary on classification Tympanogram: flat or Abnormal
Recruitment: None
Acoustic relfexes: Absent
Tinnitus: low pitched, if present
The gain decreases as the input level decreases.
-Also called squelch and noise gating
Expansion
-Useful for decreasing the audibility of very low level sounds, including hearing aid
internal noise
The amount of gain measured with a Volume control
hearing aid depends on where the ____________ Filter
& all the_________ controls are set.
The range of frequencies between the lowest and highest frequencies whose gains
Frequency Range
are 20 dB below HFA gain (ANSI S3.22)
The intensity range is from threshold to UCL.
reduced dynamic range
typically noted in individuals with SNHL and presents a challenge when fitting
hearing aids
and CORRECT Answers
noise-induced hearing loss
NIHL
-HL is greatest at 4000 Hz to 6000 Hz with a slight recovery at 8000 Hz
Abnormal condition within the labyrinth of the inner ear that can lead to a
progressive loss of hearing. The symptoms are dizziness or vertigo, hearing loss, and
tinnitus.
Also called endolymphatic hydrops because of excess production of endolymph
- Can be dormant for long periods of time, someone with this loss should be fit with
Meniere's disease
multiple memories as HL fluctuates
-HL is more pronounced in low frequencies
-Results from: head trauma, infection, degeneration of IE, allergy, or occasion a
tumor (but usually from unknown cause)-Alcohol, smoking, drugs, and caffeine
increase symptoms
, Cyst-like mass composed of epithelial cells and
cholesterol occurring in the middle ear; may be
associated with chronic otitis media.
- Can erode mastoid bone and ossicles
-Produces conductive HL
-Foul-smelling
- Flat tympanogram
cholesteatoma
-Elevated/ absent reflexes
-Elevated MCL & UCL
- Small ABG
Symptoms:
Otorrhea, HL, Vertigo, Tinnitus pain, head aches,
facial nerve pain paralysis, ET dysfunction
A conductive HL usually requires more Gain (greater acoustic power)
__________from a hearing aid than SNHL.
AC: Flat to sloping
WR: Weak to excellent
ABG: Present, but not equal at all frequencies
Mixed HL summary on classification Tympanogram: flat or abnormal shaped
Recruitment: slight or none, exceptions are common
Acoustic reflexes: absent
Tinnitus: Varies case by case
AC: Sloping
WR: Weak to good
ABG: None
SNHL Summary on classification Tympanogram: Normal
Recruitment: almost always present
Acoustic reflexes: present if HL is less than 70 dB
Tinnitus: Ringing or hissing if present
AC: Flat to gentle rising
WR: Excellent
ABG: Present
Conductive HL Summary on classification Tympanogram: flat or Abnormal
Recruitment: None
Acoustic relfexes: Absent
Tinnitus: low pitched, if present
The gain decreases as the input level decreases.
-Also called squelch and noise gating
Expansion
-Useful for decreasing the audibility of very low level sounds, including hearing aid
internal noise
The amount of gain measured with a Volume control
hearing aid depends on where the ____________ Filter
& all the_________ controls are set.
The range of frequencies between the lowest and highest frequencies whose gains
Frequency Range
are 20 dB below HFA gain (ANSI S3.22)
The intensity range is from threshold to UCL.
reduced dynamic range
typically noted in individuals with SNHL and presents a challenge when fitting
hearing aids
