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audiometric results
audiometric results
Key terms:
Air Bone Gap: gap between air conduction testing and bone conduction testing when plotted on audiogram
No Air Bone Gap: No gap between air conduction testing and bone conduction testing when plotted on audiogram
3 Types of Hearing Loss:
Conductive Hearing Loss: No loss in the inner ear, loss in the outer or middle ear, has an Air-Bone Gap
Sensorineural Hearing Loss: Loss in the inner ear, no loss in outer or middle ear, no Air-Bone Gap
Mixed Hearing Loss: Loss in the inner ear, loss in the outer and middle ear, has an Air-Bone Gap
(Alshuaib, Al-Kandari, and Hasan, 2015.)
normal audiogram
normal audiogram
Conductive Hearing Loss
Conductive Hearing Loss
Dysfunction in outer or middle ear, with a typically normal inner ear.
Normal bone conduction, abnormal air conduction
A difference greater than 10 dB is considered a significant air–bone gap
Cause could be impacted earwax
Sensorineural hearing loss
Sensorineural hearing loss
Damage to cochlea and beyond
May cause full hearing loss even if outer and middle ear are fine
Typically same results for air and bone conduction tests
Example could be damage to hair cells from loud noise exposure (permanent)
mixed hearing loss
mixed hearing loss
Typically same pathologies of conductive and sensorinerual hearing losses
Typically same pathologies of conductive and sensorinerual hearing losses
Problems in both areas of the ear
Air-bone gap greater than 10 dB
Can treat issue with outer and middle ear, but inner ear is harder
(Alshuaib, Al-Kandari, and Hasan, 2015.)
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