Etiologic factors in non-suppurative otitis media

The Laryngoscope
K H Brookler

Abstract

Two observations in non-suppurative otitis media, namely the serous fluid and the tympanic membrane retraction, may have separate explanations as to the etiologic factors. The first is the obstruction of the collecting lymphatic tubules of the middle ear and eustachian tube as they drain to the retropharyngeal lymphatics. This leads to a transudation of fluid in the middle ear or serous fluid. The second observation, retraction of the tympanic membrane, may be due to an absence or significant reduction of the surface tension lowering substance (Surface Active Membrane) of the eustachian tube, preventing the transmission of air to the middle ear from the nasopharynx.

Citations

Apr 1, 1990·The Journal of Laryngology and Otology·N S Tolley, P Phelps
Mar 1, 1978·The Annals of Otology, Rhinology, and Laryngology·M PersicoM Fradis
Jan 1, 1981·Otolaryngology--head and Neck Surgery : Official Journal of American Academy of Otolaryngology-Head and Neck Surgery·G R HoltA Garcia

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