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[Parameters of normality in multifrequency tympanometry]
1Servicio de ORL, Complejo Hospitalario Universitario, Santiago de Compostela, La Coruña, 15706, España.
Acta Otorrinolaringologica Espanola
|June 27, 2000
Summary
Multifrequency tympanometry provides detailed acoustic analysis of the middle ear. This study establishes normal resonance frequency, static admittance, and tympanometric amplitude values, aiding in the detection of ear pathologies.
Area of Science:
- Audiology
- Otoacoustic Emissions
- Middle Ear Mechanics
Context:
- Multifrequency tympanometry (MFT) utilizes probe tone frequencies from 200 to 2000 Hz.
- MFT allows separation of conductance and susceptance, offering deeper insights into acoustic transmission.
- Understanding normal tympanometric parameters is crucial for diagnosing middle ear pathologies.
Purpose:
- To establish normative values for middle ear resonance frequency, static admittance, and tympanometric amplitude.
- To investigate the relationship between these parameters and potential middle ear pathologies.
- To assess the influence of age on MFT measures.
Summary:
- A study of 136 patients (91 women, 45 men; age 11-78) was conducted using multifrequency tympanometry.
- Mean values obtained were: resonance frequency 1132.33 Hz, static admittance 0.76 dapa, and tympanometric amplitude 94.31 mmhos ac.
- No significant association was found between static admittance or tympanometric amplitude and resonance frequency, nor a systematic effect of age.
Impact:
- Provides essential normative data for multifrequency tympanometry.
- Enhances diagnostic capabilities for middle ear conditions like otosclerosis and rheumatoid arthritis.
- Supports improved understanding of acoustic transmission through the tympano-ossicular system.