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What is AC and BC in audiometry?

What is AC and BC in audiometry?

The proper notation is AC > BC; this indicates that air conduction is better than bone conduction. If the patient has abnormal hearing, a tuning fork activated and held 2.5 cm from the ear and then placed on the mastoid process will be heard better behind the ear.

What is AC and BC in Rinne test?

AC > BC: Air conduction better than bone conduction (normal Rinne). BC > AC: Bone conduction better than air conduction (abnormal Rinne). * For patients with severe sensorineural hearing loss, the patient may report bone conduction >air conduction because the sound is being sensed by the “good” (contralateral) ear.

What is auditory examination?

An audiometry evaluation is a painless, noninvasive hearing test that measures a person’s ability to hear different sounds, pitches, or frequencies.

What does Retrocochlear mean?

Definition. Pathological processes involving the vestibulocochlear nerve; brainstem; or central nervous system. When hearing loss is due to retrocochlear pathology, it is called retrocochlear hearing loss. [

What is a normal Rinne test?

Rinne test: Place the base of a struck tuning fork on the mastoid bone behind the ear. Have the patient indicate when sound is no longer heard. Move fork (held at base) beside ear and ask if now audible. In a normal test, AC > BC; patient can hear fork at ear.

What instrument is used to detect hearing problems?

An otoscope is most commonly used to look inside the ear to look for ear wax buildup, signs of ear infection, and diagnose other issues.

Is Retrocochlear hearing loss?

Retrocochlear hearing loss is a term used to describe a neural or central hearing loss which occurs beyond the cochlea, affecting the vestibulocochlear nerve (auditory nerve) or central auditory system.

What is a normal Weber test result?

Weber test: Place the base of a struck tuning fork on the bridge of the forehead, nose, or teeth. In a normal test, there is no lateralization of sound. With unilateral conductive loss, sound lateralizes toward affected ear. With unilateral sensorineural loss, sound lateralizes to the normal or better-hearing side.

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