[Clinical protocol: audiological assessment of infants in Russian Federation. Part II]. / Protokol audiologicheskogo obsledovaniya detei pervogo goda zhizni v Rossiiskoi Federatsii. Chast' II.

This is the second part of the previously published clinical protocol of audiological assessment in infants. The goal of the protocol is unification approaches to audiological diagnosis of the infants. The following sections were included in the second part of the protocol: behavioral testing in infants, testing sequence, duration of the examination and necessity in follow-up, hearing assessment in special cases (premature children, children with congenital infections, after meningitis, with external ear abnormalities, single-sided deafness, with hydrocephalus and shunts, with auditory neuropathy spectrum disorder, with mild hearing loss and otitis media with effusion), medical report.

[Clinical protocol: audiological assessment of infants in Russian Federation. Part I]. / Protokol audiologicheskogo obsledovaniya detei pervogo goda zhizni v Rossiiskoi Federatsii. Chast' I.

The clinical protocol of audiological assessment in infants was prepared by the workgroup of Russian pediatric audiologists from different regions. The goal of the protocol is unification approaches to audiological diagnosis of the infants. The protocol has been developed according the evidence based medicine principles, by reviewing current scientific publications on the topic and taking into account the order of providing medical services and other clinical practice guidelines. When direct evidence was not available, both indirect evidence and consensus practice were considered in making recommendations. This guideline is not intended to serve as a standard to dictate precisely how the child should be diagnosed. This guideline is meant to provide the evidence base from which the clinician can make individualized decisions for each patient. The first part of the protocol covers following sections: equipment, staff requirements, timing of the diagnostics, case history and risk factors, preparing the child for the appointment, sedation and general anesthesia, otoscopy, tympanometry and acoustic reflex, otoacoustic emissions, skin preparing, electrode montage, choosing the stimulators, auditory brainstem responses on broadband and narrow-band stimuli, on bone conducted stimuli, auditory steady-state responses, masking, combined correction factors.

[Speech perception and the state of sound perception thresholds in patients with cochlear implants]. / Vospriyatie rechi i sostoyanie porogov zvukovospriyatiya u patsientov s kokhlearnymi implantatami.

OBJECTIVE: To assess the state of the thresholds of sound perception at speech frequencies in users of cochlear implantation (CI) systems with developed speech skills. MATERIAL AND METHODS: The study involved 30 patients - users of CI systems, of whom 17 girls, 13 boys aged 6 to 14 years. All patients underwent speech audiometry in a free sound field twice (at the beginning of the study and after adjusting the settings of the speech processor). The ASSR (auditory steady-state responses) thresholds were recorded as the second stage to assess the perception of non-speech stimuli after adjusting the settings of the speech processor. RESULTS: Correlation analysis was carried out between the percentage of speech intelligibility and the average ASSR thresholds. There was no statistically significant relationship between lowering the ASSR thresholds and speech intelligibility. The absence of a relationship between speech intelligibility and user satisfaction with the speech processor settings was revealed. Improving the intelligibility of the user's speech by the CI system did not affect the improvement on the response to the addressed speech.

[General anesthesia influence on cochlear implant intraoperative testing]. / Vliianie obshchei anestezii na rezul'taty intraoperatsionnogo testirovaniia kokhlearnogo implanta.

In this article, we consider the influence of combined general anesthesia on the results of electrically-involved stapedial reflex threshold (esrt) registration. We pay a special attention to the anesthesia to exclude its influence on the esrt. This study included 52 patients with bilateral chronic neurosensory hearing impairment. We conducted a retrospective (from 2014 to 2016) and prospective (from 2017 to 2018) analysis of anesthesia protocols. Even though the inhaled anesthesia (sevoflurane in this case) has a depressive effect on esrt registration (the higher the minimal alveolar concentration of anesthetic agent, the higher the reflex threshold), our study shows a possibility of using it in an extended anesthesia monitoring. Inclusion of myorelaxants in cochlear implantation anesthesia protocol not only provides a safe anesthesia, but also does not prevent a timely intraoperative cochlear implant testing.

[Cochlear implantation with cochlear otosclerosis with bilateral deafness. Case from practice]. / Kokhlearnaia implantatsiia u bol'noi s otosklerozom i dvustoronnei glukhotoi. Sluchai iz praktiki.

Rehabilitation of patients with sensorineural hearing loss is an urgent task of otorhinolaryngology. One of the diseases leading to a pronounced hearing loss is the cochlear form of otosclerosis. The article describes a clinical case of rehabilitation of a patient with this pathology by means of cochlear implantation. The classification of otosclerosis based on the interpretation of computer tomography of temporal bones is presented.

[Ultramicromethod of determination of fructose in the semen]. / Ul'tramikrometod opredeleniia fruktozy v sperme.

A sensitive, accurate, and available method is proposed for fructose measurement in the semen. It is based on a color reaction of thiobarbituric acid and fructose (hydroxymethylfurfural). The range of the method is 1.4 to 38.9 mumoles/ml (0.25-7.0 mg/ml)(the normal range is 6.7 to 33.3 mumoles/ml (1.2-6.0 mg/ml) and the study can be performed with just 0.01 ml of the semen. A common water bath is used instead of a thermostat. The measurements are carried out using an available KPK-3 or PEK-56M spectrophotometer with a mercury lamp and filter No. 4. The mercury lamp is much more intensive than a common incandescent lamp, this permitting the use photoelements which lost their original sensitivity. A flaw of the method is use of concentrated hydrochloric acid.