Dr. Ronald Chin’s Explanation of Types Of Hearing Loss
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Dr. Ronald Chin’s Explanation of Types Of Hearing Loss

Dr. Ronald Chin’s Explanation of Types Of Hearing Loss

There are mainly 3 kinds of hearing loss- conductive hearing loss, mixed hearing loss and sensorineural hearing loss.

Conductive hearing loss can be caused by the interference of the conduction of sound to the cochlea or any external and internal ear disease. 

Sensorineural hearing loss happens when there’s a defect in the conversion of sound energy to nerve impulses or a defect in transmitting nerve impulses to the cortex.

Mix hearing loss is when someone has both conductive and sensorineural hearing loss.

Audiologic testing offers a measurement of hearing level thresholds by AC (air conduction) and (BC) bone conduction. In conductive hearing loss, the BC is in the normal range, while AC is outside the normal range. The difference between AC and BC thresholds is over 10dB.

In sensorineural hearing loss, both BC and AC are below normal. The difference between AC and BC thresholds is under 10dB.

In mixed hearing loss, both AC and BC thresholds are below normal. The gap between these 2 thresholds is over 10 dB.

Glue ear, after draining the ear drum

Glue ear, intact ear drum

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