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Influence of the Gas Exchange Function Through the Middle Ear Mucosa on the Development of Sniff‐Induced Middle Ear Diseases
Author(s) -
Miura Makoto,
Takahashi Haruo,
Honjo Iwao,
Hasebe Seishi,
Tanabe Makito
Publication year - 1998
Publication title -
the laryngoscope
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.181
H-Index - 148
eISSN - 1531-4995
pISSN - 0023-852X
DOI - 10.1097/00005537-199805000-00011
Subject(s) - middle ear , sniffing , medicine , eardrum , eustachian tube , otitis , audiology , cholesteatoma , tympanum (architecture) , tympanic cavity , anatomy , surgery , tympan , tympanosclerosis , radiology
To investigate the influence of gas exchange function through the middle ear mucosa on the development of sniff‐induced middle ear diseases, the authors examined the mastoid pneumatization among patients with sniffing habit using computed tomography, and also examined the change of negative middle ear pressure induced by sniffing using tympanogram. In 20 ears with cholesteatoma or adhesive otitis media, the areas of mastoid cavity measured at the level of the lateral semicircular canal were significantly smaller than those in 26 ears with otitis media with effusion (OME) or attic retraction and in eight normal ears with sniffing habit ( P < .01 and P < .0001, respectively). In 26 ears with OME or attic retraction, the areas of mastoid cavity were significantly smaller than those in eight normal ears with sniffing habit ( P < .0001). By contrast, in the four ears with sniff‐induced middle ear disease, the recovery of negative middle ear pressure in 5 minutes without swallowing was less than 10 mm H 2 O, whereas in all seven ears with normal eardrum, negative middle ear pressure recovered by more than 20 mm H 2 O in 5 minutes. These findings suggested that impairment of gas exchange function through the middle ear mucosa, as well as eustachian tube dysfunction, might be closely related to the development of sniff‐induced middle ear diseases.