Barotraumatic otitis media

When the atmospheric pressure changes suddenly, the eustachian tube mouth cannot be opened smoothly to adjust the pressure in the tympanic cavity, which causes tympanic cavity damage, similar to aseptic otitis media, which is called barotrauma. Under normal circumstances, the eustachian tube opens momentarily when swallowing, yawning, and blowing the nose, keeping the air pressure in the tympanum and the outside air pressure in balance. When there are pathological changes in the eustachian tube, such as colds, sinusitis, nasopharyngeal tumors, nasal polyps, nasal septum deviation, pharyngeal muscle paralysis, and malocclusion of the maxillary joint, etc., or during sleep and coma, the eustachian tube loses normal regulation. The function of air pressure is an intrinsic factor. Sudden changes in outside air pressure, such as naval diving, airlift, and hyperbaric oxygen chamber treatment. If there is no good protective measures, it is easy to cause air pressure tympanic injury. This is an external factor.

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