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Published on: February 29, 2020
Tympanometry in infants with middle ear effusion having been identified using spiral computerized tomography
Liu Zhiqi1, Yang Kun, Huang Zhiwu
1Department of Otolaryngology, Hubei Women and Children Hospital, Wuhan, China. liuwu188@tom.com
American Journal of Otolaryngology
|December 18, 2009
Summary
1000 Hz tympanometry is recommended for diagnosing middle ear fluid in infants under six months. This method showed a higher diagnostic accuracy compared to 226 Hz tympanometry in the study.
Area of Science:
- Pediatrics
- Otolaryngology
- Diagnostic Imaging
Background:
- Middle ear effusion (MEE) is common in infants and can impact hearing.
- Accurate diagnosis of MEE is crucial for timely intervention.
- Tympanometry is a non-invasive tool used to assess middle ear function.
Purpose of the Study:
- To evaluate the diagnostic value of 226 Hz and 1000 Hz probe-tone tympanometry for detecting middle ear fluid in infants.
- To compare the accuracy of these two tympanometry frequencies against spiral computerized tomography (CT) scans.
Main Methods:
- 52 infants (42 days to 6 months) were included.
- Spiral CT scans were performed for diagnosis.
- Hearing was assessed using 226 Hz and 1000 Hz tympanometry.
- Tympanometric results were compared with CT findings.
Main Results:
- 1000 Hz tympanometry showed a high concordance rate (98.08%) with CT diagnosis for middle ear fluid.
- 226 Hz tympanometry had a significantly lower concordance rate (25%) with CT diagnosis.
- Flat tympanograms at 1000 Hz strongly indicated middle ear effusion, while single-peaked tympanograms indicated normal middle ears.
Conclusions:
- 1000 Hz tympanometry is a reliable and accurate method for identifying middle ear fluid in infants.
- 226 Hz tympanometry is not recommended for diagnosing middle ear effusion in this age group.
- Clinical practice should favor 1000 Hz tympanometry for infant middle ear evaluations.
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