LAB TEST

Tympanometry

Tympanometry is a test used to detect problems in the ear drum and middle ear.

How the Test is Performed

Before the test, your health care provider will look inside your ear to make sure nothing is blocking the eardrum. Next, a device is placed into your ear. This device changes the air pressure in your ear and makes the eardrum move back and forth. A machine records the results on graphs called tympanograms.

How to Prepare for the Test

You should not move, speak, or swallow during the test. Such movements can change the pressure in the middle ear and give incorrect test results. The sounds heard during the test may be loud. This may be startling. You will need to try very hard to stay calm and not get startled during the test. If your child is to…

How the Test will Feel

There may be some discomfort while the probe is in the ear, but no harm will result. You will hear a loud tone and feel pressure in your ear as the measurements are taken.

Why the Test is Performed

This test measures how your ear reacts to sound and different pressures.

Normal Results

The pressure inside the middle ear can vary by a very small amount. The eardrum should look smooth.

What Abnormal Results Mean

Tympanometry may reveal any of the following: A tumor in the middle ear Fluid in the middle ear Impacted ear wax Lack of contact between the conduction bones of the middle ear Perforated eardrum Scarring of the eardrum Eustachian tube dysfunction

Risks

There are no risks with this test.

References

Player B. Otitis media. In: Kliegman RM, St. Geme JW, Blum NJ, et al, eds. Nelson Textbook of Pediatrics . 22nd ed. Philadelphia, PA: Elsevier; 2025:chap 680. Woodson E, Mowry S. Otologic symptoms and syndromes. In: Flint PW, Francis HW, Haughey BH, et al, eds. Cummings Otolaryngology: Head and Neck Surgery . 7th ed.…

This is a summary. Read the full article at www.ucsfbenioffchildrens.org (reviewed 02/05/2024).

This page is general information and is not medical advice. It does not replace a registered doctor, and it is not a prescription or a recommendation to use any medicine or test. Prices are listed prices and may change. Always follow the advice of your doctor or pharmacist.