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Eustachian tube function assessed with tympanometry.

K H Siedentop, A Lowey, R A Corrigan

    The Annals of Otology, Rhinology, and Laryngology
    |March 1, 1978
    PubMed
    Summary
    This summary is machine-generated.

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    This study found tympanometry unreliable for measuring Eustachian tube function in adults with intact eardrums. Results varied and did not consistently indicate normal or pathological function, questioning its clinical use.

    Area of Science:

    • Otolaryngology
    • Audiology
    • Medical Engineering

    Background:

    • Eustachian tube dysfunction is a common condition affecting middle ear pressure regulation.
    • Accurate measurement of Eustachian tube function is crucial for diagnosis and treatment.
    • Holmquist's tympanometry method was proposed as a promising clinical tool.

    Purpose of the Study:

    • To evaluate the reliability and reproducibility of Holmquist's tympanometry method for assessing Eustachian tube function.
    • To compare Eustachian tube function in normal versus pathological ears using this method.
    • To determine if the method is a useful clinical tool for ears with intact tympanic membranes.

    Main Methods:

    • Tympanometry was performed on 15 normal and 14 pathological adult ears with intact tympanic membranes.

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  • The study aimed to reproduce Holmquist's published results.
  • Nasopharyngeal pressures were applied and recorded during swallowing maneuvers.

    • Main Results:

    • Results from normal and pathological ears were not significantly different and were inconsistent with Holmquist's findings.
    • 60% of normal ears failed to achieve the target negative middle ear pressure (-100 to -250 mm H2O).
    • Both normal and pathological ears required repeated swallows to normalize pressure, and tests were not always repeatable.

    Conclusions:

    • The tympanometry method, as applied in this study, is not a useful or reliable clinical tool for measuring Eustachian tube function in ears with intact tympanic membranes.
    • The findings do not support the clinical utility of Holmquist's method.
    • Further research may be needed to develop reliable methods for assessing Eustachian tube function.