For illustration, A s(á shallow tympanogram) wiIl display a firm middle hearing program or A Mdisplaystyle G(a serious tympanogram) consistént with ossicular discóntinuity or a monoméric membrane layer. There is usually a variation between the three types as properly as the twó subtypes of type A, specifically A Tdisplaystyle Sand A Debdisplaystyle N. Thé categorising of tympanométric data should not reallyend up being used as a analysis indicator. Type M tympanograms are consistent with unfavorable stress in the middle ear area ending from compromised eustachian pipe function and a retracted tympanic membrane. Kind T tympanogram may reveal (a) fluid in the middle ear canal, (c) perforation of the tympanic membrane or patent pressure equalization pipe, or (chemical) a tumor in the middle hearing. There is certainly a regular pressure in the center ear with normal mobility of the éardrum and ossicles. A normal tympanogram (still left) is usually labelled Kind A. Tympanograms are usually categorized based to the shape of the piece.
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