Multifrequency immitancemetry in the diagnosis of menieres disease

In Meniere?s diease, restriction in the movements of the stapes footplate by the increased inner ear pressure might cause modifications in the admittance of the middle ear. The aim of this study is to assess the diagnostic value of multifrequency immitancemetry in Meniere?s disease by evaluating the possible changes in the middle ear admittance. Thirty cases with Meniere?s disease served as the study group. Thirty cases with cochlear pathology other than Meniere?s disease and 30 normal cases were inculded in the study as control groups. Standard immitancemetry using 226-Hz probe tone and multifrequency immitancemetry were performed on each case. Multifrequency frequency immitancemetry yielded significantly higher resonance frequencies in the affected ears of the study group when compared to those of the control groups?. However, there was no significant change between the groups in the acoustic impedances evaluated by means of standard 226-Hz probe tone immitancemetry. The findings of this study suggest that multifrequency immitancemetry might reveal the possible changes of the middle ear admitance in Meniere?s disease, and might be included in the diagnostic test battery of Meniere?s disease.