... remains challenging. Available tests evaluating the presence of endolymphatic hydrops (EH) are often expensive or time assuming. An in-office quick and simple non-invasive diagnostic test is multifrequency tympanometry (MFT). It can measure conductance at 2 kHz probe tones, which was demonstrated...

... MD were included in the study. Before, and then at 1, 2, and 3 h after administration of glycerol (1 g/kg), pure-tone hearing levels (125–8,000 kHz) and multifrequency tympanometry tests were performed. As a control, the RF values of the ears of 25 healthy subjects (i.e., 50 ears) were compared...

...Keiko Sugasawa; Shinichi Iwasaki; Chisato Fujimoto; Makoto Kinoshita; Aki Inoue; Naoya Egami; Munetaka Ushio; Yasuhiro Chihara; Tatsuya Yamasoba Multifrequency tympanometry (MFT) is the measurement of the impedance of the middle ear transmission system at a wide range of frequencies from 200 Hz...

... to in the content or advertisements. Multifrequency tympanometry Tympanometry Impedance audiometry Cochlea Perilymphatic fistula Acoustic trauma A Grason-Stadler GSI 33 II immittancemeter was used. It can deliver a probe tone from 200 Hz to 2 kHz and modulate intrameatic pressure automatically...