Tympanometry

Tympanometry is a non-invasive hearing test that measures the movement of the eardrum (tympanic membrane) and the middle ear system.

It involves placing a small probe into the ear canal and varying the air pressure to assess how effectively sound energy is transmitted through the middle ear.

The results are displayed as a graph called a tympanogram, which shows the relationship between air pressure and the mobility of the eardrum and middle ear structures.

How it's done:

Tympanometry helps diagnose problems in the middle ear, such as:

Fluid in the middle ear (otitis media)

Ear infections

Eustachian tube dysfunction

Perforated eardrums

Problems with the ossicles (small bones in the middle ear)

It's particularly useful in children who are prone to ear infections.

A small probe, resembling an earphone, is placed in the ear canal.

A device attached to the probe changes the air pressure in the ear canal.

The movement of the eardrum in response to these pressure changes is measured.

The test is quick and painless, typically taking a few minutes.

During the test, you'll be asked to sit still and avoid talking or swallowing. Interpreting the results:

A normal tympanogram shows a healthy middle ear with proper eardrum movement.

Abnormal results can indicate various problems, such as fluid in the middle ear, a stiff eardrum, or a hole in the eardrum.

The shape of the tympanogram helps audiologists and doctors determine the nature and severity of any middle ear issues.

Tympanograms are categorized into types (A, B, C) based on their shape, which provides clues about the condition of the middle ear.