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

Study on the opening function of eustachian tube in healthy adults by means of sonotubometry and step pure tone line spectrum signal

金蕾;郑阳阳;倪坤;李晓艳

1:上海交通大学医学院附属儿童医院耳鼻咽喉头颈外科

摘要
目的 探究咽鼓管功能声测法合理的纯音声源信号频率区间,并初步建立正常值范围。方法 选取31例健康成人受试者,分段采用3~6 kHz频带上间隔100 Hz的阶跃式纯音线谱信号作为声源进行咽鼓管功能声测法测试,分析结果。结果 本研究发现3.5、4.3、4.35、4.5、4.65、4.8、5.0、5.15 kHz 8个频点通过率均较高,是较为合适的纯音信号频点;将这8个频率点上的线谱数据汇总后统计分析,计算出LVc值的95%可信区间,即95%的LVc值>5.5 dB,取整数后将6 dB设为LVc门限阈值。结论 本研究发现咽鼓管功能声测法较合适的纯音线谱声源频率为3.5、4.3、4.35、4.5、4.65、4.8、5.0、5.15 kHz 8个频点,声源信号在吞咽动作发生前后约0.5~1秒范围内相对声压级超过6 dB幅值变化可作为咽鼓管有效开放指标。
关键词
咽鼓管功能;纯音信号;声测法
基金项目(Foundation):
作者
金蕾;郑阳阳;倪坤;李晓艳
参考文献

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金蕾郑阳阳倪坤李晓艳