VALUE OF THE WEBER TEST IN DIAGNOSIS OF DIFFERENT FORMS OF OTOSCLEROSIS
VALUE OF THE WEBER TEST IN DIAGNOSIS OF DIFFERENT FORMS OF OTOSCLEROSIS
Shamsidinov B.N., *Azizov K.N., Muhtorova P.R., Shaydoev S.S.
VALUE OF THE WEBER TEST IN DIAGNOSIS OF DIFFERENT FORMS OF OTOSCLEROSIS
Department of Otorhinolaryngology of the State Educational Establishment «Institute of Postgraduate Education in Sphere of Republic of Tajikistan»
*National Medical Center of Republic of Tajikistan
Aim. To evaluate the impact of sound perception and sound conduction disorders in otosclerosis on the lateralization of sound, to determine the forms of disease, in which the experience of Weber is most effective, set the value of the experiment at two intensities for detecting of lesions of cochlea in otosclerosis.
Materials and methods. We analyzed audiograms of 100 patients with otosclerosis. Information of threshold tonal audiometry, binaural balance of loudness and also difference in the threshold of differentiation on 500 and 2,000 Hz were compared with experimental results of Weber.
Results.Revealed that dependence of lateralization from the value of bone-air interval in "pure" and mixed form of otosclerosis is not always observed. In this paper the experimental data of Weber were compared with thresholds differentiation. In order to identify destruction of hair apparatus the data of lateralization was compared with the results of binaural loudness balance. In this case, the change in lateralization of sound at above-threshold intensity was observed. Thus, in the direction of sound on above-threshold intensity it is possible to judge about degree of preservation of receptor on the worse hearing ear.
Conclusions. Weber test is suitable for determining of significant differences in sound-conducting and sound-apparatus on both sides. The test results can be properly evaluated only after comparison with the results of other tests. Weber's experience desirable to perform on two intensities, because it increases its clarity allows to identify in individual cases the accelerated increase of volume and to solve the problem of bone-air "rupture" in the ear with large lesion sound-system.
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