tympanometry


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tympanometry

 [tim″pah-nom´ĕ-tre]
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).

tym·pa·nom·et·ry

(tim'pă-nom'ĕ-trē),
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.

tym·pa·nom·et·ry

(tim'pă-nom'ĕ-trē)
Measurement of the pressure compliance function of the eardrum using an immitance instrument (e.g., an audiometer).

tympanometry

Measurement 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.
References in periodicals archive ?
AAP guideline recommends using pneumatic otoscopy as a primary method for diagnosing OME and tympanometry can be used to confirm the diagnosis".
Moreover, tympanometry, auditory brainstem response (ABR), and distortion product otoacoustic emissions (DPOAEs) were performed.
The hearing evaluation consisted of pure tone audiometry; speech audiometry--Speech Recognition Threshold (SRT) and phonemically balanced monosyllabic words and immitance (tympanometry and acoustic reflexes).
A 2-year prospective study of 2- to 6-year-old preschoolers revealed that MEE, diagnosed via monthly otoscopy and tympanometry, occurred at least once in 53% of the children in the first year and in 61% of the children in the second year.
The guidelines were not written to apply to infants younger than 6 months, and in the youngest infants, tympanometry and acoustic reflectometry may be less accurate.
Abnormal findings for tympanometry were considered [+ or -] 100 daPa middle ear peak air pressure, <0.3 mL or >1.7 mL for static compliance.
Derkay said he recommends a physical exam to document the presence of middle ear fluid, plus both audiometry and tympanometry tests.
These include audiometric evaluation (n=126, 99%), head MRI studies (n=78, 62%), tympanometry (n=67, 54%), ABR (n=55, 43%), complete blood work-up (including thyroid stimulating hormone and vitamin B12 levels) (n=33, 26%), psychoacoustic testing (e.g.,: tinnitus pitch and loudness matching tests) (n=23, 18%), temporal bone CT scan (n=13, 10%), and single positron emission tomography (SPECT) (n=3,2%).
Fiberoptic endoscopy and tympanometry were performed before and after treatment.
Acoustic immittance test showed A-shaped tympanometry curves of both ears as well as normal acoustic reflex thresholds of ipsilateral and crossed stapedius muscles.
Surgical success was defined as an intact TM on clinical examination and by tympanometry testing at the time of the final postoperative assessment.
Otitis media with effusion was diagnosed by otoscopy and confirmed through audiometry and tympanometry tests.