300 Longwood Avenue Boston, MA 02115 (617) 355-6000 My Child Has: Tympanometry Programs that perform this test Diagnostic Audiology Program   Tympanometry is a test of middle ear function and not a test of hearing thresholds. Tympanometry provides a measure of the health of the eardrum (tympanic membrane) and the middle ear space behind it, by recording the compliance of the tympanic membrane as varying degrees of air pressure are introduced into the ear canal. The test is performed by placing a rubber-tipped probe in the ear canal while the child sits still, often in the parent's lap, and taking a reading in a few seconds. The results of the tympanogram can help the pediatrician or otolaryngologist to assess middle ear fluid, Eustachian tube dysfunction, tympanic membrane perforations, and whether ear tubes are open or blocked. The information on this website should not be taken as medical advice, which can only be given to you by your personal health care professional. Copyright © Children's Hospital Boston. All rights reserved.