Evaluation of Middle Ear Function by Tympanometry and the Influence of Lower Barometric Pressure at High Altitude
Evaluation of Middle Ear Function by Tympanometry and the Influence of Lower Barometric Pressure at High Altitude
复制标题
鼓室导抗测试评价中耳功能及高海拔低气压的影响
DOI：
10.1089/ham.2020.0042
复制
发表时间：
2020-12-31
影响因子：
2.1
通讯作者：
Li, Qingzhong
中科院分区：
文献类型：
--
作者：
Jiang, Tao;Zhao, Liping;Li, Qingzhong
Jiang，Tao，Liping Zhao，Yanbo Yin，Huiqian Yu，and Qingzhong Li.高原低气压对中耳功能的影响及鼓室导抗测试。High Alt Med Biol 00：000-000，2020.目的：评估高海拔地区居民与海平面参与者相比的中耳功能。设计：前瞻性观察研究。设置：所有实验均由经验丰富的听力学家使用校准的鼓室导抗仪进行。参与者：招募17至23岁的年轻人。来自上海（海拔4米）的75名参与者和来自日喀则地区（海拔4,040米）的133名参与者被招募。结果：日喀则地区受试者的静态顺应性峰值较小，但鼓膜绝对顺应性保持不变，而日喀则地区受试者的静态顺应性峰值较日喀则地区受试者小，但鼓膜绝对顺应性峰值较小。同样地，鼓室导抗法测得的耳道容积（ECV）也受到西藏海拔升高的影响。此外，高海拔地区居民的鼓室压峰值降低，这表明在低气压下咽鼓管功能略有下降。结论：高原低气压对鼓室导抗图有一定的影响。因此，除压力相关指标外，TW更适合于高海拔地区中耳功能的评价。
Jiang, Tao, Liping Zhao, Yanbo Yin, Huiqian Yu, and Qingzhong Li. Evaluation of middle ear function by tympanometry and the influence of lower barometric pressure at high altitude. High Alt Med Biol 00:000-000, 2020.Objective: To evaluate middle ear function in residents of high-altitude areas in comparison to sea-level participants.Design: Prospective observational study.Setting: All experiments were performed by experienced audiologists with a calibrated tympanometry machine.Participants: Young adults between the age of 17 and 23 were recruited. Seventy-five participants from Shanghai (altitude 4 m) and 133 participants from the Shigatse area (altitude 4,040 m) were recruited. Any participant with any otological disorder was excluded.Main Outcome Measure: Four indexes of the tympanogram were evaluated in the two groups from different altitudes.Results: Our results showed that the peak of static compliance for the participants in Shigatse was smaller, but the absolute compliance of tympanic membrane remained the same. Similarly, the ear canal volume (ECV) from tympanometry was also affected by the elevated altitude in Tibet. In addition, the tympanometric peak pressure was decreased in high-altitude residents, which suggests a slightly declined function of the Eustachian tube at lower barometric pressure. However, no difference was found in the tympanometric width (TW).Conclusion: Our results indicate that tympanograms were affected by decreased atmospheric pressure at high altitude. Therefore, other than pressure-related indexes, TW is better for evaluating the function of the middle ear in high-altitude regions.