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[Tympanometry in chronic otitis media].

T Spillman

    ORL; Journal for Oto-Rhino-Laryngology and Its Related Specialties
    |January 1, 1976
    PubMed
    Summary
    This summary is machine-generated.

    Tympanometry, a middle ear pressure test, showed good correlation with otoscopy in diagnosing serous otitis media. However, it may miss some cases of middle ear fluid and hearing improvement.

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    Area of Science:

    • Otolaryngology
    • Audiology
    • Pediatric Medicine

    Background:

    • Serous otitis media (SOM) is a common condition affecting children.
    • Accurate diagnosis is crucial for appropriate treatment, often involving myringotomy.
    • Otological and audiological assessments are key diagnostic tools.

    Purpose of the Study:

    • To analyze otological and audiological findings in patients undergoing myringotomy for suspected SOM.
    • To evaluate the diagnostic utility of tympanometry compared to otoscopy and audiometry.
    • To determine the role of tympanometry in identifying cases of middle ear fluid and hearing improvement.

    Main Methods:

    • Retrospective analysis of 63 patients (113 ears) undergoing myringotomy.
    • Correlation of impedance data (tympanometry) with otoscopic findings.

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  • Comparison of tympanometry results with pure-tone audiometry and treatment outcomes.

    • Main Results:

    • Tympanometry correlated with otoscopy in 87% of ears.
    • Tympanograms provided no additional information beyond otoscopy in patients with reliable audiometry.
    • Tympanometry missed 6/78 ears with fluid and 6/49 ears with hearing improvement post-therapy.

    Conclusions:

    • Tympanometry alone is insufficient for diagnosing SOM when reliable audiometry is available.
    • Tympanometry may be valuable in non-audiometrically testable patients (infants, developmentally delayed) when combined with otoscopy.
    • Pathological tympanograms can occur in ears with normal-appearing drums and middle ear fluid.