Study on the opening function of eustachian tube in healthy adults by means of sonotubometry and step pure tone line spectrum signal
10.3969/j.issn.1006-7299.2025.02.010
- VernacularTitle:应用咽鼓管功能声测法和阶跃式纯音线谱信号对健康成人咽鼓管开放功能的研究
- Author:
Lei JIN
1
;
Yangyang ZHENG
1
;
Kun NI
1
;
Xiaoyan LI
1
Author Information
1. 上海交通大学医学院附属儿童医院耳鼻咽喉头颈外科(上海 200062)
- Publication Type:Journal Article
- Keywords:
Eustachian tube function;
Pure tone signal;
Sonotubometry
- From:
Journal of Audiology and Speech Pathology
2025;33(2):145-149
- CountryChina
- Language:Chinese
-
Abstract:
Objective To find a reasonable frequency range of pure tone source signal and to propose a prelim-inary normal value determination range for sonotubometry for eustachian tube function assessment.Methods A to-tal of 31 healthy adults were enrolled in this study.Step pure tone line spectrum signals with an interval of 100 Hz on the frequency band of 3-6 kHz were used as sound sources for sonotubometry.Results The results showed that 8 frequency points of 3.5 kHz,4.3 kHz,4.35 kHz,4.5 kHz,4.65 kHz,4.8 kHz,5.0 kHz and 5.15 kHz were suitable frequency points for pure tone signal.The line spectrum data at these 8 frequency points were summarized and statistically analyzed,and 95％confidence interval of LVc value was calculated,that was,95％LVc value was greater than 5.5 dB,and 6 dB was set as the LVc threshold after integer.Conclusion In this study,a pure tone line spectrum sound source frequency suitable for sonotubometry was found,and the amplitude change of sound pressure level over 6 dB within about 0.5-1 second before and after swallowing action of the sound source signal can be used as an effective indicator of eustachian tube opening.
