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search.filters.applied.f.rights: search.filters.rights.info:eu-repo/semantics/closedAccessSubject: search.filters.subject.Multifrequency tympanometry

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    Middle Ear Resonance Frequency in Pilots and Pilot Candidates
    (2016) Tuncer, Melisa Melek; Babakurban, Seda Turkoglu; Aydin, Erdinc; 0000-0001-6864-7378; 27662350; AAJ-2379-2021
    BACKGROUND: Barotrauma is a frequent problem in aviation medicine. Eustachian tube dysfunction plays a critical role in the pathogenesis of barotrauma. Function of the Eustachian tube can be indirectly assessed by multifrequency tympanometry, which provides valuable information about the resistance and permeability of the middle ear in a wide frequency range. The aim of this study was to research whether multifrequency tympanometry could be used for assessing middle ear impairments in pilots. METHODS: There were 140 pilots and pilot candidates between the ages of 20-55 with normal otoscopic examination who were evaluated by audiological test batteries. Body mass index values, flight hours, audiometric pure tone thresholds, tympanometry and multifrequency tympanometry test results were noted. RESULTS: There was statistically significant decrease in the multifrequency tympanometry measurements of the left and right ears of the pilots with 200-3000 flight hours compared to pilot candidates, and similarly, the pilots with 3000-10,000 flight hours compared to pilot candidates. DISCUSSION: Multifrequency tympanometry values changed between pilot candidates and pilots. However, the values of multifrequency tympanometry did not change due to flight hours. This test battery should not be used for follow up of pilots in the clinic.
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    Middle-Ear Resonance Frequency and Eustachian Tube Function in Players of Wind Instruments
    (2021) Ozer, Fulya; Ozer, Cem; Erbek, Seyra; Ozluoglu, Levent N.; 0000-0002-8453-6069; 0000-0002-6641-5300; 0000-0001-5381-6861; 34412053; AAJ-2445-2021; ABH-1785-2020; ABC-1809-2020
    Introduction: The effect of the continuous forced expiration action of players of wind instruments to produce sound, on the eustachian tube functions and the middle-ear resonance frequency (RF), has not been investigated in the literature to date. The aim of this study is to evaluate eustachian tube functions and the middle-ear RF of players of wind instruments. Methods: In this prospective case-control clinical study, a study group of 28 players of wind instruments in the orchestra (28 participants, 56 ears) and a control group of 34 volunteers (34 participants, 68 ears) were included. The eustachian function of wind instrument players in a symphony orchestra was measured using an automatic eustachian tube function test in acoustic tympanometry and the RF of the middle ear was determined in multifrequency tympanometry. Results: There was a statistically significant difference among the musicians, especially in players of woodwind instruments, in terms of dysfunction of the eustachian tubes (p = 0.048). In the musicians, the pre- and postperformance RF mean values for all ears were 925 and 1,020 Hz, respectively, and these were significantly different (p = 0.004). Conclusion: This is the first study to uses multifrequency tympanometry to examine the middle-ear RF and eustachian tube function of wind instrument musicians in an orchestra. Eustachian tube dysfunction was found to be more prominent and a higher RF of the middle ear was seen after a performance, especially in players of wood wind instruments. However, the effect of these on the professional performance of players of wind instruments should be investigated in future work.
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    Effects of Glycerol Test on Resonance Frequency in Patients with Meniere's Disease
    (2019) Oz, Isilay; Hizal, Evren; Cam, Osman Halit; Ozluoglu, Levent Naci; 31715604
    Objective: To evaluate resonance frequency (RF) values via dehydration effects in the inner ear caused by the glycerol test, which is used as a diagnostic method for Meniere's disease (MD). Methods: Twenty adult patients with unilateral MD were included in the study. Before, and then at 1, 2, and 3 h after administration of glycerol (1 g/kg), pure-tone hearing levels (125-8,000 kHz) and multifrequency tympanometry tests were performed. As a control, the RF values of the ears of 25 healthy subjects (i.e., 50 ears) were compared to the affected and unaffected ears in the 20 MD patients. Results: There was a significant difference between the RF values of affected and healthy ears before glycerol administration (p = 0.047). The RF values before and after glycerol administration into affected ears were compared. The average RF values decreased significantly from 748.0 +/- 402.1 to 808.0 +/- 410.1 Hz at 1 h after glycerol intake, and this value increased during the subsequent hours. There were no statistically significant differences between the pure-tone levels before and 1 h after glycerol administration, but a significant decrease was observed at 3 h. Conclusion: We suggest that MD has different inner-ear dynamics and normal RF values when compared to healthy ears. Furthermore, decreased inner ear pressure causes reduction of the mass effect and a stiffening of the annular ligament. We conclude that pre- and post-RF tests should be added to the test battery for diagnosis of MD.