Sağlıklı Orta Kulağa Sahip Bireylerde Geniş Bant Timpanometri (GBT) Parametrelerinin İncelenmesi

Abstract

Immittancemetry is based on the saving pure tone sound which is reflected from eardrum after given at outer ear canal and gives objective information about the condition of the middle ear. The middle ear admittance is considered by changing pressure of outer ear. Usually 226 and 1000 Hz Tympanometry is used in clinics. Wideband Tympanometry (WBT) is done a click stimulus that incloses a wide frequency range (226¬−8000 Hz). The sound, that is reflected back from the middle ear is called Reflectance, that is absorbed by the middle ear is called Absorbance. It is aimed (1) collection of WBT data on the healthy middle ear, (2) comparison of these data with Immittancemetry results and (3) to evaluate age-related changes in Immittancemetry and WBT results. The study included 60 individuals who are on 20-49 years of age with normal hearing. Three age groups, with 20 individuals in each decade, were formed. WBT, 226 and 1000 Hz Immittance and is done in all groups. It is found no differences Immittancemetry and WBT values between groups (p>.05). There is no age-related changes Immittancemetry and WBT values between 20-49 years. In all grups, Equivalent Ear Canal Volume (Vea), Static Admittance (Ytm) and Tympanogram Width (TW) values measured with 226 Hz Immittancemetry is different from values measured with WBT (p˂.05). More study is needed to determine the causes of this difference.