Maico MI 24, Operating Instructions Manual

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Operating Instructions MI 24, MI 24h
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Middle ear fluid such as in serious otitis media will yield a very flat tympanogram with
no definite peak and negative air pressure. A resolving case or beginning case may
produce a reduced peak in the presence of severe negative middle ear pressure. The
ear canal volume is normal and the reflex is either absent or at an elevated level.
Eustachian tube dysfunction in the absence of fluid will show a normal compliance
curve, but it will be displayed to the negative side of the tympanogram. Ear canal
volume will be normal and the reflex may be present, depending on the degree of
involvement.