Hearing Disorders 004 - Audiometric Assessment And Interpretation

1. Hearing loss produced by both conductive and sensorineural problems in the same ear are called _________.

Mixed

Congenital

Interaural attenuation

Cross hearing

a mixed hearing loss is a combination of sensorineural and onductive in the same ear
cross hearing is whtn the stimuli presented to one ear crosses the head and is heard by the other ear (that's why we use masking in some situations)

Explanation

a mixed hearing loss is a combination of sensorineural and onductive in the same ear
cross hearing is whtn the stimuli presented to one ear crosses the head and is heard by the other ear (that's why we use masking in some situations)

2. When a practitioner uses too musch masking noise in the none test ear creating false thresholds (inaccurate results), this is called __________________

Interaural attenuation

Undermasking

Overmasking

Masking

Overmasking occurs when a practitioner uses excessive masking noise in the non-test ear, resulting in false thresholds and inaccurate results. This can lead to an overestimation of the hearing ability in the test ear, as the masking noise is masking the true threshold levels.

Explanation

Overmasking occurs when a practitioner uses excessive masking noise in the non-test ear, resulting in false thresholds and inaccurate results. This can lead to an overestimation of the hearing ability in the test ear, as the masking noise is masking the true threshold levels.

3. The energy loss in a sound as it travels from one ear to the other is called ________________.

Impedence

Interaural attenuation

Functional hearing loss

Calibration

interauaral attenuation is the energy loss as a sound travels from one ear to the other. Interaural attenuation for bone conduction is 0, but 15db is allowed for testing purposes. For air conduction 40 dB is the difference used.

Explanation

interauaral attenuation is the energy loss as a sound travels from one ear to the other. Interaural attenuation for bone conduction is 0, but 15db is allowed for testing purposes. For air conduction 40 dB is the difference used.

4. A tumor that starts in the tissues of the eardrum is _______

Acoustic neuroma

Mastoidectomy

Cholesetatoma

Otolyth

a cholesteatoma starts in the eardrum tissues
a mastoidectomy is the surgical removal of infeccted tissue within the mastoid bone behind the ear
an otolyth is a bony growth in the ear canal
an acoustic neuroma is found on the 8th cranial nerve (acoustic nerve)

Explanation

a cholesteatoma starts in the eardrum tissues
a mastoidectomy is the surgical removal of infeccted tissue within the mastoid bone behind the ear
an otolyth is a bony growth in the ear canal
an acoustic neuroma is found on the 8th cranial nerve (acoustic nerve)

5. Many hearing testing instruments are calibrated to match the desired levels in accordance to which standards?

ISO

ANSI

ENS

NIHL

American National Standards Institute are the desired standards for testing equipment such as audiometers and impedence devices.

Explanation

American National Standards Institute are the desired standards for testing equipment such as audiometers and impedence devices.

6. This would be:

(sourse: bryanking.net)

Post myringotomy scarring

Cholesteatoma

Otosclerosis

Squamous cell carcinoma

notice the bulgin portion of the ear drum: cholesteatoma grows from tissue of ear drum
squamous cell carcinoma is on skin cells, usually found on pinna or concha in addition to face, arms, legs, etc.
otosclerosis occurs in the middle ear space so otoscopy won't reveal it
post myringotomy scarring refers to scar tissue from the placement of tubes through the eardrum. no bulge would show.

Explanation

notice the bulgin portion of the ear drum: cholesteatoma grows from tissue of ear drum
squamous cell carcinoma is on skin cells, usually found on pinna or concha in addition to face, arms, legs, etc.
otosclerosis occurs in the middle ear space so otoscopy won't reveal it
post myringotomy scarring refers to scar tissue from the placement of tubes through the eardrum. no bulge would show.

7. Ossicles refer to

Malleus, incus & stapes footplate

The middle ear bones

An inflammation affecting middle ear structures

Mastoid, incus & stapes

the middle ear bones: malleus, incus & stapes

Explanation

the middle ear bones: malleus, incus & stapes

8. When a clinician sees a shadow curve on the audiogram, this refers to:

Air bone gap of at least 15 dB between ears

Air threshold differences of at least 40 dB between ears

Air bone gap of at least 15 dB in the same ear

Air threshold differences of at least 40 dB in the same ear

air threshold differences of at least 40 db between the left and right ear is refered to as a shadow curve. Air conduction masking needs to be used at any frequencies in which a 40 dB gap is present between the left and right thresholds.

Explanation

air threshold differences of at least 40 db between the left and right ear is refered to as a shadow curve. Air conduction masking needs to be used at any frequencies in which a 40 dB gap is present between the left and right thresholds.

9. 65 y/o male. Denied history of ear infections, family history, tinnitus, dizziness. Positive history of recreational noise (hunting, airboating), wife made him come to office for hearing test he reports that he hears fine. What is your next action after obtaining this audiogram

Diagnose significant ear difference, refer for medical management

Diagonse hearing loss, proceed with hearing aid assessment & fitting

Diangose noise induced hearing loss, proceed with hearing aid assessment & fitting

Diagnose possible collapsible canals, repeat air thresholds using insertphones or soundfield

collapsible canals have a sloping high frequency hearing loss that mimics noise induced hearing loss. However, it shows up as a conductive component. A change in the way the testing is done is necessary to rule out collapsible canals from a true conductive hearing loss!

Explanation

collapsible canals have a sloping high frequency hearing loss that mimics noise induced hearing loss. However, it shows up as a conductive component. A change in the way the testing is done is necessary to rule out collapsible canals from a true conductive hearing loss!

10. The three types of presentation tones typically found on an audiometer

Pure tone, warble & pink noise

Narrow band, pure tone & white noise

Narrow band, fm & pink noise

Narrow band, warble & white noise

The correct answer is "narrow band, warble & white noise". This is because narrow band refers to a specific frequency range, warble refers to a fluctuating tone, and white noise refers to a random signal with equal intensity at all frequencies. These three types of presentation tones are commonly used on an audiometer to test a person's hearing abilities at different frequencies and in different conditions.

Explanation

The correct answer is "narrow band, warble & white noise". This is because narrow band refers to a specific frequency range, warble refers to a fluctuating tone, and white noise refers to a random signal with equal intensity at all frequencies. These three types of presentation tones are commonly used on an audiometer to test a person's hearing abilities at different frequencies and in different conditions.