[High-frequency tonal threshold hearing changes in diabetes mellitus]

Hypoacusis diabetic neuro-sensorica was established in 45 per cent of 100 patients with diabetes mellitus examined by high frequency audiometry, whereas by a standard audiometry (a frequency range to 8 kHz), the affection was established in 21 per cent of the cases. That indicates the high significance of high frequency audiometry in the early detection of the complication of diabetes mellitus. The diabetic hypoacusis is more frequently found in patients that had had manifestations of neuropathies as well as in patients with insulin-independent diabetes, to a certain extent in patients with frequent decompensations of the basic disease. No correlation was established between the origination of hypoacusis and patients' age, the duration of the diabetes and the presence of vascular degenerative syndrome.