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| Acute otitis media suppurative stage |
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| compare normal drum and AOM AOM-early (stage of redness) -if severe AOM ada whitish compression of drums due to absence of BVs |
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| Serous otitis media |
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| Serous OM air fluid level |
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| Mucoid OM-bluish drum due to water content behind the drum |
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| Adhesive OM-glistening light |
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| Atelectasis of middle ear |
=reduction in the volume of the middle ear because of eustachian tube obstruction followed by absorption of the oxygen in the middle ear and subsequent retraction of the tympanic membrane medially.
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