Falk B, Magnuson B
Int J Pediatr Otorhinolaryngol. 1984 May;7(2):97-106. doi: 10.1016/s0165-5876(84)80034-8.
One important role of the Eustachian tube is to protect the middle ear from the extensive physiological pressure variations that take place in the nasopharynx, for example on sniffing. In a previous investigation in 50 children with persistent middle ear effusion a surprisingly high percentage of ears were evacuated by sniffing. The present study was undertaken in a second series of children, and results were found to be reproducible. In total 156 ears in 100 children have been investigated. In 63% of ears (73% of subjects) evacuation of the middle ear took place on sniffing. Results show that Eustachian tube malfunction in these subjects is characterized by a reduced protective function; a condition denoted "Eustachian tube closing failure".
咽鼓管的一个重要作用是保护中耳免受鼻咽部发生的广泛生理压力变化的影响，例如在吸气时。在之前对50名患有持续性中耳积液的儿童进行的一项调查中，通过吸气使中耳排空的耳朵比例高得出奇。本研究在另一组儿童中进行，结果具有可重复性。总共对100名儿童的156只耳朵进行了调查。在63%的耳朵（73%的受试者）中，中耳在吸气时实现了排空。结果表明，这些受试者的咽鼓管功能障碍的特征是保护功能降低；这种情况被称为“咽鼓管关闭失败”。
