[Application of otoadmittance to measure eustachian tube tympanometry].

This paper studied a simplified and quantified valsalva and reverse valsalva maneuver eustachian tube tympanometry with otoadmittance meter. In normal groups, the compliance changes were 0.57 +/- 0.23 ml with valsalva maneuver and 0.26 +/- 0.12 ml with reverse valsalva maneuver. Otherwise, the recordings were performed in various tympanic functions induced by various eustachian tube functions, and the results showed that this method was significant for the diagnosis of eustachian tube structure, obstruction or patency. The recording curves helped to determine the types and degrees of eustachian tube abnormality.