KBB-Forum 2020 , Cilt 19, Sayı 1

MIDDLE EAR RESONANCE FREQUENCY WITH MULTI-FREQUENCY TYMPANOMETRY IN HEALTHY ADULTS: CLINICAL NORMATIVE VALUES

Dr. Şule KAYA1, Uzm. Ody. Mustafa KARABULUT1, Dr. Kemal KESEROĞLU2, Uzm. Ody. Serap ER3, Dr. Muharrem DAĞLI2, Dr. Hakan KORKMAZ2
1AYBÜ, Odyoloji Bölümü, Ankara, Türkiye
2Dışkapı Eğitim Araştırma Hastanesi, KBB, Ankara, Türkiye
3Dışkapı Eğitim Araştırma Hastanesi, Odyoloji Ünitesi, Ankara, Türkiye Introduction: Multifrequency-multicomponent tympanometry is a measurement technique in which components of the admittance (Ya) (i.e., conductance (G), susceptance (B)) can be examined simultaneously, enabling the concurrently multiple evaluation using different probe tones between 226 Hz and 2000 Hz. The aim of this study is to investigate multifrequency-multicomponent tympanometry findings and to determine normative values of middle ear resonance frequency in healthy individuals.

Material and Methods: This study was conducted in an audiology clinic of a training and research hospital. The study included 60 adults (120 ears) (32 males, 28 females) with normal hearing thresholds as a result of pure tone (screening) audiometry with normal otoscopic examination. Ya, B, G tympanograms, classical tympanometry parameters (compliance, ear canal volume, tympanometric peak pressure) and middle ear resonance frequencies of the subjects were examined. GSI Tympstar V2 immitance audiometry was used for all evaluations.

Results: Ya results were found to be type A tympanogram for all subjects and 1B1G tympanogram for other componentsin 226 Hz tympanometry. The mean value of the middle ear resonance frequency for the females was 885.8(±123.5) Hz while it was 870.3(±124.3) Hz. for the males. There was no statistically significant difference between the two genders for right ear and left ear (p> 0.05).

Conclusion: In this study, multifrequency-multicomponent tympanometry findings and middle ear resonance frequency normative values of healthy adults were determined for an audiology clinic of a reference hospital education and research hospital. Studies on the other frequencies of admittance and components will be beneficial for clinical applications of multifrequency-multicomponent tympanometry. Keywords : Multi-frequency tympanometry, Multi-component tympanometry, Resonance frequency