Pau Hans Wilhelm, Sievert Uwe, Just Tino, Sadé Jacob
ENT Department, Medical School, University of Rostock, Doberaner Strasse 137-9, Rostock, Germany.
Acta Otolaryngol. 2009 Nov;129(11):1182-6. doi: 10.3109/00016480802570537.
By means of a direct, though non-invasive experiment on healthy humans we could demonstrate that middle ear (ME) pressure decreases when the eustachian tube (ET) does not open. Thus with a very simple method the basic theory of continuous gas loss from the ME into the circulation and the replenishment of the loss through the ET could be validated.
To record changes in ME pressure over a period of time in normal human ears, while the ET is kept closed.
On-line tympanometry was carried out in three subjects, who refrained from swallowing for 20-120 min.
During the time when the ET was kept closed by refraining from swallowing, tympanometric monotonous pressure decrease was recorded. Once the tested subject could not refrain from swallowing any longer and swallowed again, ME pressure equalized immediately.
通过对健康人类进行一项直接但非侵入性的实验，我们能够证明当咽鼓管（ET）不开放时，中耳（ME）压力会降低。因此，通过一种非常简单的方法，可以验证从中耳持续向循环系统气体流失以及通过咽鼓管补充流失气体的基本理论。
在咽鼓管保持闭合的情况下，记录正常人类耳朵一段时间内中耳压力的变化。
对三名受试者进行在线鼓室声导抗测量，他们在20 - 120分钟内不吞咽。
在通过不吞咽使咽鼓管保持闭合的时间段内，记录到鼓室声导抗测量的压力单调下降。一旦受试对象无法再抑制吞咽并再次吞咽，中耳压力立即恢复平衡。
