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  • Title: Eustachian tube closing failure in children with persistent middle ear effusion.
    Author: Falk B, Magnuson B.
    Journal: Int J Pediatr Otorhinolaryngol; 1984 May; 7(2):97-106. PubMed ID: 6540252.
    Abstract:
    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".
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