[Transient evoked otoacoustic emissions (TEOAE) in tinnitus patients treated with xylocaine]

The group of patients suffering from tinnitus was treated with intravenous Xylocaine. Ten consecutive doses of Xylocaine (2 mg/kg b.m.) were administered during a period of ten days. Changes of amplitudes of TEOAE in relation to tinnitus suppression was assessed. In 91.5% of cases we observed correlation between amplitude changes and complaint abatement. Both amplitude changes and the time of tinnitus suppression increased after ten days of treatment in comparison with single dose of Xylocaine. The differences of amplitude variations between tinnitus and non tinnitus ear group was statistically significant (Wilcoxon test p < 0.05). The treatment with Xylocaine was considered to be the beginning of long-term procedure aimed at causing habituation of tinnitus in patients conscience (TRT).