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indirect measurement of the compliance (mobility) and impedance of the tympanic membrane and ossicles of the middle ear; it is done by subjecting the external acoustic meatus to positive, normal, and negative air pressure and monitoring the resultant sound energy flow. See also tympanogram (def. 2).
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
A technique that measures immittance of the middle ear at various levels of air pressure; helpful in the diagnosis of middle ear effusion, eustachian tube function, and otitis media.
Farlex Partner Medical Dictionary © Farlex 2012
Measurement of the pressure compliance function of the eardrum using an immitance instrument (e.g., an audiometer).
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
tympanometryMeasurement of the air pressure in the middle ear and of the stiffness of movement of the eardrum and the AUDITORY OSSICLES. Tympanometry may be used as part of the assessment of hearing defect.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005