MGT of hearing disorders: types of hearing loss

Flashcards covering key terms and definitions from the video notes on hearing thresholds, air-bone gaps, and the distinctions between conductive, sensorineural, and mixed hearing losses, as well as unilateral/bilateral assessment.

Normal hearing

All thresholds are below 25 dB; hearing is considered normal.

Hearing loss

A condition where not all thresholds are below 25 dB; requires determining type (air-bone gap, conductive, sensorineural, mixed).

Air-bone gap

Difference of 15 dB or more between air conduction and bone conduction thresholds in the same ear at the same pitch.

Sensorineural hearing loss

Hearing loss with no air-bone gap; indicates cochlear or neural involvement (inner ear/nerve) and elevated bone conduction thresholds may occur.

Conductive hearing loss

Air-bone gap present with normal bone conduction (<25 dB); cochlea is functioning, but sound is not effectively conducted to it.

Mixed hearing loss

Air-bone gap present with elevated bone conduction thresholds (>25 dB); indicates both conductive and sensorineural components.

Unilateral hearing loss

Hearing loss in one ear.

Bilateral hearing loss

Hearing loss in both ears.

Air conduction

Testing thresholds obtained through air conduction to assess overall hearing sensitivity.

Bone conduction

Testing thresholds obtained through bone conduction to assess cochlear/sensorineural function.

Normal bone conduction

Bone conduction thresholds below 25 dB.

Elevated bone conduction thresholds

Bone conduction thresholds greater than 25 dB, indicating a sensorineural component.