[The time range in sequential bilateral cochlear implantation]. / Vremennoi interval pri posledovatel'noi binaural'noi kokhlearnoi implantatsii.

The article is devoted to the problems of binaural cochlear implantation, especially in patients with a long time interval between surgeries. The purpose of the study was to evaluate the effect of the time range between successive interventions in patients with binaural prosthetics using the CI system. MATERIALS AND METHODS: the study included 50 patients aged 10 to 14 years, divided into 3 study groups: patients with unilateral cochlear implantation (group I), patients with bilateral implantation with a less than 1 year range between operations (group II) and patients with bilateral implantation with a more than 5 year range between interventions (group III). Comparative analysis was carried out using speech audiometry in silence and noise, assessment of sound localization and questionnaires to assess the auditory dynamics and speech development. RESULTS: Patients in groups II and III showed comparable results in speech intelligibility in noise and sound localization. At the same time, these indicators turned out to be higher than in patients of group I. Patients from all three groups did not show statistically significant differences in speech intelligibility in silence and in the level of speech development. CONCLUSION: a long interval (more than 5 years) after the first implantation should not be considered as a contraindication to binaural implantation.

[The influence of hearing and vestibular impairments on cognitive function in elderly people.]

Cognitive function is a complex brain function that is important in the cognition of the reality and connecting with it. It has a complicated reflex basis, arises from external factors exposure, improves by growing up and learning till its maximum and declines in the elderly age. For several years it was believed that cognitive function drop is connected with ageing processes of the whole organism. However, the results of the latest studies show that it can be affected by many factors. Two of the most influencing factors are hearing and vestibular efficiency. Moreover, hearing and vestibular normalization can even improve the cognitive function. Unfortunately, studies, that describe the role of hearing and vestibular function in the cognitive sphere, are extremely rare. That is why further research is very important, especially in the rehabilitation tactics. For elderly patients with severe-to-profound hearing loss cochlear implantation is the optimal rehabilitation method. However, ear surgery can lead to such complication as vestibular dysfunction. That is why preoperative diagnostics and postoperative care are very important for preventing cognitive impairments.

[The experience in surgical treatment of hearing loss in Van der Hoeve patients]. / Opyt khirurgicheskogo lecheniya tugoukhosti u patsientov s sindromom Van-der-Khuve.

Despite the rare incidence of Van der Hoeve syndrome in the population, the problem of treating patients with this type of disease is important for modern science and practical medicine. One of the most difficult tasks in treatment is to improve the quality of hearing. The world scientific community lacks a unified coordinated approach to the methods of auditory rehabilitation of patients with Van der Hoeve syndrome. In recent years, there have been tendencies in the scientific literature to increase the frequency of non-surgical approach due to the low incidence of satisfactory results of surgical treatment. In this regard, we present our experience of complex treatment of patients with Van der Hove syndrome, based on the use of modern surgical technologies and conservative pathogenetically substantiated treatment.

[Influence of hearing decline on cognitive function in elderly and senier age patients and its assessment after cochlear implantation (literature review).]

The study of the effect of cochlear implantation on cognitive function is an urgent problem, since the world is increasing the population of elderly and senile people who, as a rule, have certain hearing impairments. Age-related hearing loss is one of the most common health problems associated with aging, affecting two-thirds of people over the age of 70. However, few adults are tested for hearing loss, and even fewer are being treated. It is known that hearing loss - the most common sensory deficit-forms the prerequisites for narrowing the range of cognitive functions in the elderly and can serve as a factor accelerating the progression of cognitive changes. We analyzed the available research on the effects of hearing loss and cochlear implantation on cognitive function. It was revealed that for the most part, they had a small sample, the results were not subjected to the necessary statistical analysis, and the tests used were not adapted for hearing impaired people. After analyzing different tests for assessing cognitive function, HI-MoCA and RBANS-H tests were selected, which are adapted for hearing impaired people, which will allow to reliably assess cognitive function in the pre- and postoperative period, as well as to trace the effect of cochlear implantation on cognitive function in postoperative period.