Which statement best defines conductive hearing loss?

Which statement best defines conductive hearing loss?

• A. It occurs when sound waves cannot pass through the outer or middle ear.
• B. It is caused by damage to the cochlea or auditory nerve.
• C. It is diagnosed with the Rinne test.
• D. It is always permanent.

Answer: (A)

Conductive hearing loss occurs when sound waves can’t travel effectively through the outer ear or middle ear to reach the inner ear. The issue is with the transmission pathway, not with the inner ear or the auditory nerve, so the inner ear and nerve function are typically intact. This is why conditions like earwax blockage, middle-ear fluid, a perforated eardrum, or stiffening of the ossicles can cause this type of hearing loss, and many of these problems are reversible with treatment. A clinical clue is the Rinne test: bone conduction sounds are heard longer than air conduction in conductive loss, whereas in sensorineural loss air conduction remains better than bone conduction but both are reduced. The other statements describe problems in the inner ear or nerve, or describe the loss as permanently fixed, which doesn’t define conductive loss.

Conductive hearing loss occurs when sound waves can’t travel effectively through the outer ear or middle ear to reach the inner ear. The issue is with the transmission pathway, not with the inner ear or the auditory nerve, so the inner ear and nerve function are typically intact. This is why conditions like earwax blockage, middle-ear fluid, a perforated eardrum, or stiffening of the ossicles can cause this type of hearing loss, and many of these problems are reversible with treatment. A clinical clue is the Rinne test: bone conduction sounds are heard longer than air conduction in conductive loss, whereas in sensorineural loss air conduction remains better than bone conduction but both are reduced. The other statements describe problems in the inner ear or nerve, or describe the loss as permanently fixed, which doesn’t define conductive loss.