Measurements of middle ear pressure.

概要

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Since Politzer and Bezold proposed the hydrops ex vacuo theory to explain the pathogenesis of middle ear effusion, it is generally accepted that middle ear effusion arises as a result of a negative pressure in the middle ear cavity, following eustachian tube dysfunction. In recent years, many investigators have recorded middle ear pressure by means of indirect methods such as tympanometry, however, there are few reports on the direct measurement of middle ear pressure.The application of a pressure microtransducer for direct measurement of middle ear pressure is currently being developed in our laboratory. The present paper describes the details of the instrument for middle ear pressure measurement and its application in patients with middle ear effusion, demonstrating patients with positive and negative middle ear pressure in both ears.
耳鼻咽喉科臨床学会の論文