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  • Title: [Impedance measurement in the diagnosis of otitis serosa. Description of a new test: star (author's transl)].
    Author: Freyss G, Pialoux P.
    Journal: Ann Otolaryngol Chir Cervicofac; 1977; 94(4-5):259-69. PubMed ID: 900755.
    Abstract:
    A new presentation is given providing an overview of impedance measurement and audiometric examinations and one that makes it possible to determine at a glance the functional status of the middle and inner ear (presence or otherwise of complete recruitment). In the impedance measurement diagnosis of otitis serosa it is also necessary to compare the state of the stapedial reflex with the tympanometric curve. In particular, attention is drawn to a new technique in which the amplitude of the stapedial reflex is measured at 10 dB above the trigger threshold of this reflex (Star). If this amplitude is greater than 2 Madsen units at sensivity 3, ther is not fluid in the middle ear. Finally, the impedance manometer can be used, according to Holmquis'ts technique, to monitor the permeability of the trans-tympanic drain and the recovery or otherwise of tubal permeability.
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