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Related Experiment Videos

Middle ear function in rheumatoid arthritis: a multiple frequency tympanometric study

D Biasi1, F Fiorino, A Carletto

  • 1Istituto di Patologia Medica, Università degli Studi di Verona, Italy.

Clinical and Experimental Rheumatology
|May 1, 1996
PubMed
Summary
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Rheumatoid arthritis (RA) can affect middle ear mechanics, altering resonance frequency. This study found abnormal resonance in over a third of RA patients, suggesting joint involvement.

Area of Science:

  • Otolaryngology
  • Rheumatology
  • Biomedical Engineering

Background:

  • Rheumatoid arthritis (RA) is a systemic autoimmune disease primarily affecting joints.
  • The middle ear's mechanical properties can be influenced by inflammatory processes.
  • Ossicular chain function is critical for efficient sound transmission.

Purpose of the Study:

  • To investigate alterations in middle ear mechanical properties in patients with rheumatoid arthritis.
  • To assess the diagnostic utility of resonance frequency measurements in identifying middle ear involvement in RA.
  • To explore the potential impact of RA on the ossicular diarthroses.

Main Methods:

  • A cohort of 30 rheumatoid arthritis patients was evaluated.
  • Multiple frequency tympanometry was employed to measure middle ear resonance frequency.

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  • Data were compared against a control group of 48 healthy subjects.

    • Main Results:

    • Normal middle ear resonance frequency values ranged from 800 to 1250 Hz in the control group.
    • Abnormal resonance frequencies were observed in 11 out of 30 (36.6%) RA patients.
    • Abnormalities included both increased (9 ears) and decreased (4 ears) resonance frequencies, affecting 13 ears in total.

    Conclusions:

    • Abnormal acoustic impedance and altered resonance frequencies suggest middle ear involvement in RA.
    • The findings indicate potential involvement of the incudo-malleolar and incudo-stapedial joints in RA.
    • RA may disrupt normal ossicular chain mechanics, impacting sound transmission.