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3 (92), 2019


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Edition of the journal is supported partially by the grant of the Fogarty International Center (FIC) of the National Institute of Health and Illinois University, Chicago.

JOURNAL

ISSN 2077-7477 (Print)
ISSN 2077-7485 (Online)

A journal "Dovkillia ta zdorovia" (Environment & Health) publishes the articles on the problems in the field of medical ecology, hygiene, health protection and ecological safety.

Founder of the Journal:
State Institution "O.M. Marzeiev Institute for Hygiene and Medical Ecology of the National Academy of Medical Sciences of Ukraine"

Frequency of publication:
quarterly

Environment & HealthISSN: 2077-7477 eISSN: 2077-7485
No: 4 (80)   -   2016   -   Pages: 11-15
Time indices of long-latent auditory evoked potentials in the workers of noise professions at the process of preparation and bottling of non-alcohol and weak alcohol beverages
Shydlovska .V.1, Shydlovska T.A.1, Shevtzova T.V.1, Volkova T.V.1, Hrechkovska N.V.,2, Yavorovsky .P.2, Brukhno R.P.3
1 State Institution O.S. Kolomiichenko Institute of Otolaryngology, NAMSU, Kyiv
2 P. L. Shupyk National Medical Academy for Post-Graduate Education, Kyiv
3 O.O. Bohomolets National Medical University, Kyiv

: 613.644-052:612.85:663.8

ABSTRACT:
Objective. We studied the functional state of the acoustic analyzer cortex region by the data of long-latent auditory evoked potentials (LAEP) of the workers of noise professions, employed at the Obolon factory, taking into account the hygienic labour conditions.

Methods and materials. We present a hygienic assessment of noise, microclimate, and lighting on the working places of the operators. The measurements were performed with the help of audiometer "Larson Davis 800B", globe thermometer Tensor 41, catathermometer (F 564), luxmeter U-116. We carried out the study of temporary indices of long-latent auditory evoked potentials in 37 workers of noise professions at the Obolon factory (mainly the operators engaged in beverage bottling). The control group consisted of 15 somatically and otologically healthy people not affected the industrial noise.

Results. According to the Hygienic Classification of Labour 248 of 08.04.2014, approved by the Decree of the Ministry of Public Health of Ukraine, by the noise levels at different working places the labour conditions of the workers, engaged in beverage bottling, may belong to 3.1 labour conditions class (harmful conditions of the 1-st degree) and 3.2 class (harmful conditions of the 2-nd degree); by the temperature of the air to 2 (permissible), 3.1 (harmful conditions of the 1-st degree) and 3.2 (harmful conditions of the 2-nd degree) labour conditions classes; by the labour process difficulty and its intensity to 2 (permissible) and 3.1 (harmful conditions of the 1-st degree) labour conditions classes. As a whole the labour conditions of the operators, engaged in the beverage bottling, may be referred to the 3.2 danger class (harmful conditions of the 2-nd degree).
At the analysis of the peak latent periods of P1, N1, 2 and N2 components of the long-latent auditory evoked potentials under ipsilateral stimulation by 1 kHz tone in the main group a reliable increase in length of the peak latent period of the N2 component in the workers of noise professions was detected in comparison with the control one.

Conclusions. A reliable (P<0.01) increase in the length of the peak latent period of the N2 component of long-latent auditory evoked potentials was observed in the workers of noise professions at the Obolon factory, affected the increased levels of permanent, wide-range noise, exceeding MAL at medium and high frequencies (500-8000 Hz), in comparison with the control group. It testifies about a dysfunction of the cortex structures of the acoustic analyzer in examined workers.

KEYWORDS:
long-latent auditory evoked potentials, workers of noise professions, acoustic analyzer cortex region.
REFERENCES:
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