3 - Audiogram Interpretation Flashcards
During an audiogram assessment, which is tested first (AC/BC)?
Air Conduction
Comparing the AC and BC results helps determine the ____ (Type/degree) of hearing loss
Type
True or False: BC Testing measures the integrity of the peripheral sensorineural mechanisms
True - it measures the integrity of the Cochlea and Auditory Nerve
True or False: Normal BC Results would be less than or equal to 25 dB HL
True
Abnormal BC results are ______ (greater than/greater than or equal to) 25 dB HL
Greater than
True or False: AC thresholds indicate conductive status of hearing only
False
A normal conductive status is indicated by an ABG of less than or equal to _____ dB
10
True or False: Sensorineural Impairment can occur in one or both of the cochlea and auditory nerve
True
What does SNHL stand for?
Sensorineural Hearing Loss
Name one pathophysiological example of sensorineural hearing loss
- Cochlear hair cell loss or dysfunction
- Cochlear damage (malformation, biochemical composition of cochlear fluids, etc)
- Nerve damage
- Synaptic dysfunction
- Any combination of above
Conductive Hearing Loss is indicated when AC thresholds fall outside of the normal range and the ABG is greater than ____ dB
10
An example of ______ (conductive/sensorineural) Hearing Loss would be exostoses
Conductive
Middle Ear Malformation and External Auditory Canal Atresia are two examples of congenital ______ (conductive/sensorineural) hearing loss
Conductive
True or False: High levels of air conducted sound cannot activate the cochlea via BC mechanisms
False
Conductive Hearing Loss is indicated by BC thresholds less than or equal to ____ dB HL, AC greater than BC thresholds by more than 10 dB, and AC thresholds greater than _____ dB HL
25, 25
