RESUMO
The aim of the study was a comparative analysis of subjective assessments and audiological parameters of patients with hearing loss obtained before and after the course of transcranial electrical stimulation (TES). The study group included 99 patients (45 men and 54 women) with chronic mono- (16%) and bilateral (76%) sensorineural hearing loss (SNHL) aged 20 to 85 years. Groups of young and middle age (20-59 years old) amounted to 37 people; elderly (60-74 years old) - 48 and senile (75-90 years old) - 14 people. The observation included: anamnesis, ENT survey, tone threshold audiometry, impedancemetry, and questioning. All patients underwent a course of 10 TES procedures using the «Transair-7¼ device. The data indicated an improvement in subjective assessments regarding auditory perception in 54%, speech intelligibility in 53%, tinnitus in 24% and general well-being in 36% of patients in the study group. The distribution of hearing thresholds in the region of speech frequencies before and after the course also turned out to be significantly different (p<0,01). At the same time, gender and age-specific features of the effect of TES on hearing and general well-being were revealed, the most pronounced in senile patients who showed minimal positive dynamics. In general, taking into account age restrictions, the results confirm the feasibility of using TES in SNHL, even outside the combined (with audio loading) stimulation.
