[Early diagnosis of neurosensory component in various forms of conductive hearing loss]

Audiological examination including routine methods, tonal threshold audiometry (10000-20000 Hz frequency range), noise resistance of the acoustic analyzer in contralateral masking with noises of different intensity has been made to identify early subclinical neurosensory hypoacusis in 96 patients with acute and chronic inflammation of the middle ear aged 17-75 years. 140 subjects with normal hearing served control. The findings show the ability of such tests to assess noise resistance of the acoustic analyzer and tonal threshold audiometry in wide range of frequencies to detect latent neurosensory hypoacusis which is correctable if discovered early.