Abstract
AbstractA simple technique designed to relate controlled changes in middle ear pressures brought about in the pressure chamber with simultaneously measured tympanometric recordings was used to validate the electroacoustic impedance assessment of intratympanic air pressures in human beings.The data obtained showed the absolute and tympanometric results to be in close approximation. Tympanometry in its capacity of evaluating Eustachian tube functions, was classified into two versions: the static type, which records the consequent results of Eustachian tube functions or malfunction, together with a graphic estimation of the overall tympanic membrane compliance; and the dynamic type, that actually records and assesses Eustachian functions quantitatively. The contribution of this work toward further understanding and usage of tympanometry in clinical practice is briefly discussed in view of the proven validity and reliability of the test.
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