This is less common than eustachian tube dysfunction and serous otitis media, and it occurs primarily in adults. This is called abnormal patency of the eustachian tube (patulous eustachian tube). On occasion, the opposite of blockage occurs, and the eustachian tube remains excessively open for a prolonged period. The limitation of mobility of the eardrum due to the presence of a vacuum or fluid in the middle ear accounts for the hearing impairment associated with eustachian tube dysfunction. It occurs frequently in connection with upper respiratory infections or allergies. Serous otitis media is very common in young children due to immaturity of the eustachian tube, but can also occur in older children and adults. If the fluid is unable to drain into the throat due to obstruction of the eustachian tube, a condition called serous otitis media (fluid in the middle ear) may develop. If the obstruction is prolonged, fluid may be sucked into the middle ear from the lining mucous membranes. In an adult, this is usually accompanied by some discomfort, such as a fullness or pressure feeling, and may result in a mild hearing impairment and head noise (tinnitus). Obstruction or blockage of the eustachian tube results in a vacuum in the middle ear (negative middle ear pressure), with resultant retraction (sucking in) of the eardrum. Anything that interferes with this periodic opening and closing of the eustachian tube may result in a hearing impairment or other ear symptoms. In so doing, it allows air into the middle ear to replace air that has been absorbed by the middle ear lining (mucous membrane), or to equalize pressure changes occurring with altitude changes. Under normal circumstances, the eustachian tube opens for a fraction of a second in response to swallowing or yawning. The eustachian tube functions as a pressure equalizing valve for the middle ear, which is normally filled with air. The narrowest portion is the area near the middle ear space. The eustachian tube is approximately 1-½ inches in length. The eustachian tube is a narrow channel which connects the middle ear with the nasopharynx (the upper throat area just above the palate and behind the nose). Meniere’s Disease – Vertigo Balance Disorder.Risks and Potential Complications of Surgery.Surgical Treatment of Dizziness & Meniere’s Disease.Surgical Treatment of Ear Infection, Eardrum Perforation & Cholesteatoma.Meniere’s Disease/Endolymphatic Hydrops.
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