Otoacoustic Emissions (OAEs) Test

Otoacoustic emissions (OAEs) are sounds that the inner ear produces when it responds to a stimulus. The cochlea, or inner ear, contains hair cells that vibrate in response to sound, creating a nearly inaudible sound that echoes back into the middle ear and is transmitted to the external ear canal. This sound can then be recorded using an OAE test, which is a simple way to screen for hearing loss and assess the health of the inner ear.

OAE Test: What to Expect

An OAE test is a quick and not painful procedure that doesn’t require any special preparation and typically takes about 15-20 minutes to complete. Here’s a detailed overview of what to expect:
During Test

During an OAE test, a small earphone is placed in the ear canal and plays several tones to stimulate the cochlea. The earphone then measures the "echoes" that the cochlea releases in response to the sounds.

OAEs Detection

OAEs can be used to screen infants and other special populations. When testing a newborn, it's usually best to be calm, relatively quiet, and ideally asleep. The ear canal can be straightened out by gently pulling down and back on the pinna, and warming the ear tips before insertion can help keep the baby calm.

After Test

Pathologic problems in the outer ear, such as stenosis, external otitis, cysts, or abnormal middle ear pressure, can cause OAEs to be absent.

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