Miscellaneous
False! (Rehabilitative)
How would you classify degree of hearing loss with a 50 dB PTA?
Moderate
A patient has a PTA of 10 and an SRT of 25. How would you classify the SRT/PTA agreement?
Poor (greater than 13 dB difference between the two).
What is impedance?
Reciprocal to admittance. It is the extent to which the system resists the flow of energy through it, or the amount of sound that is not passed through the middle ear.
How many newborns are born with some degree of hearing loss in at least one ear?
2 to 3 out of every 1000 babies
The first step of any audiologic evaluation.
Observation
Describe AC, BC, and ABG for SNHL on audiogram.
Abnormal AC, abnormal BC, NO ABG.
SRT is the speech reception threshold. Measures the softest speech a person can understand (i.e. repeat back).
SDT is the speech detection threshold. Measures the softest level of speech a person can detect (i.e. hear).
SDT is typically better than SRT (because it is easier to detect than repeat back).
30 daPa
What is an appropriate method of audiometry for a 2 year old?
Visual Reinforcement Audiometry
The name of the nerve that sends hearing and balance signals to the brain.
Vestibulocochlear Nerve (VIII nerve)
Describe the modified Hughson-Westlake method
Down 10, up 5
What does UCL stand for?
Uncomfortable listening level (also known as LDL, or loudness discomfort level)
A patient has a tympanogram peak compliance of 4.5, with normal middle ear pressure and ear canal volume. How would you classify the Jerger Type?
Jerger type Ad.
Your patient is a young child and you are teaching him to throw a block into a bucket every time he hears a tone/sound in his headphone. What type of audiometry is this called?
Conditioned Play Audiometry (CPA)
Want to convey enough information but not too much to avoid overwhelming them. Want to keep patient perspective in mind.
Your patient has a threshold of 40 dB in the right ear and 90 dB in the left ear tested under headphones. How much dB is at risk for crossing over?
10 dB
90-40 dB = 50 dB
50 dB - 40 dB (IA)= 10 dB potential crossover (if you don't mask).
Name one advantage to using recorded speech vs live voice
Standardized
Good test-retest reliability
Consistency in rate of presentation/speaker
If a patient has normal hearing in the right ear and a severe sensorineural hearing loss in the left ear, what would you expect the pattern of results for OAEs to be?
Present: Right
Absent: Left
Name some examples of observable repeatable responses for BOA?
Sucking (starting/stopping)
Eye blinking (starting/stopping)
Turning head to sound
Describe the appropriate procedure for otoscopy.
Wash hands, visualize the outer ear, pull auricle up and back to straighten ear canal, hold otoscope in opposite hand, BRACE pt's chin with pinky finger, guide speculum in ear canal and observe landmarks.
A patient has a threshold of 25 dB in the right ear and 80 dB in the left ear. Is masking required for headphones and/or inserts? If so, what is the initial masking level?
Yes, (80-25= 55...more than the IA value of 40). IML= 25 + 20 = 45).
Word recognition testing reveals scores of 85% @ 75 dB HL and 85% @ 80 db HL. What is the PB-Max?
85% @75 dB HL (Always take the best score at the lowest presentation level)
Ipsi: Outer ear, middle ear, inner ear, auditory nerve, cochlear nucleus, SOC, facial nerve, innervates stapedius muscle in middle ear all on same side that stimulus is presented in.
Contra: Stimulus sent through outer ear, middle ear, inner ear, auditory nerve, cochlear nucleus, SOC, crosses over to opposite SOC, to opposite facial nerve, which innervates opposite stapedius muscle in opposite middle ear.
According to ASHA, what is the gold standard of testing in pediatric audiology?
Behavioral measures!