Ambulatory Care Nurse – Board Certified (AMB-BC) Practice Test

In Weber test with conductive hearing loss, sound lateralizes to which ear?

Normal ear Abnormal ear Both ears equally None

Correct Answer:

Abnormal ear

Explanation:

The Weber test relies on comparing bone-conducted sound in both ears. When there is unilateral conductive hearing loss, the ear with the middle-ear problem has reduced air-conduction sensitivity, while bone conduction still stimulates the cochlea on that side. The brain then perceives the tuning fork as louder in the abnormal ear, so the sound localizes to the ear with the conductive loss. If the loss were sensorineural in one ear, the damaged inner ear would dampen the bone-conducted signal there, and the tone would be heard louder in the normal ear. Thus, in conductive hearing loss, the tone lateralizes to the abnormal ear.

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