Test-Retest Reliability of the Components of Multi-Frequency Tympanometry

Abstract

OBJECTIVE:Multi-frequency tympanometry and its components are extensively used to identify middle ear disorders. However, there are a limited number of studies that have attempted to determine its test-retest reliability. Thus, the present study attempted to determine the test-retest reliability of the different components of multi-frequency tympanometry. MATERIALS and METHODS:The resonant frequency (RF), F45, and ΔG were determined three times in 40adults with normal hearing. The results obtained across the three trials were compared to determine the test-retest reliability.RESULTS: F45 and ΔG had excellent intra-and inter-session reliabilities. The reliability of the RF was also good, but it was relatively less compared to that of the other two measures. The study also showed that there was no effect of gender on the reliability measures. CONCLUSION:Thus, F45 and ΔG can be clinically used considering theirhigh reliability, and the RF should be interpreted with caution. However, further studies on a larger group of patientsincluding a clinical group are essential for determining the further applicability of these results.

Normalisation values for the resonant frequency of the middle ear in rats

“…RF may be defined as the frequency at which impedance is lowest and vibration highest within the middle ear. It is influenced by the mass and stiffness of the middle ear system (4,5). RF is defined as the frequency at which the mass and stiffness effects are equal and balance each other out in the middle ear.…”

Benefícios do retalho osteoplástico pediculado como via de acesso em mastoidectomia para cirurgia de implante coclear

“…Este exame apresenta vantagens significativas em relação aos testes de timpanometria convencional, uma vez que permite medir a função da orelha média em uma faixa de frequência mais ampla. Além disso, o WBT apresenta uma sensibilidade de 94,8% e especificidade de 87,5% para a detecção de efusão em orelha média, que são considerados superiores à sensibilidade de 91,3% e especificidade de 62,5% do exame de timpanometria convencional 69,70,71 . A análise do exame também auxilia a distinguir os diferentes tipos de curvas resultantes, o que equivale a uma orelha normal, e também o que representa a presença de efusão em orelha média ou mesmo pressão negativa nesta.…”