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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 (75)   -   2015   -   Pages: 51-55
Qualitative and quantitative metrics in rheoencephalography working with the coal industry sensorineural hearing loss
Shydlovska T.A.1, Shydlovska T.V.1, Kazak N.S.1, Ovsyanik .V.1, Serbyn G.S.1, Gvozdetsky V.A.1
1 State institution "O.S. Kolomiychenko Institute of Otolaryngology of National Academy of Medical Sciences of Ukraine"

: 616.831-073.97:631.62.001.8

ABSTRACT:
State of the problem. Negative role of industrial noise in the development of professional hearing loss no doubt, but the mechanism of its action on the human organism is very complex and not fully understood, while many authors pay much attention to the vascular factor role in the development of sensorineural hearing loss. The objective was to conduct a comparative analysis of the results of research on auditory function, qualitative and quantitative indicators of rheoencephalography in the coal industry from different occupational groups workers with the sensorineural hearing loss and health normal-hearing control subjects with regard to noise load.

Materials and methods. The rheoencephalography was performed in 50 workers. The control group 15 healthy individuals who had no complaints of the hearing loss. The study of auditory function was performed using a clinical audiometer AC-40, manufactured by "Interacoustics" (Denmark). Studies of cerebral hemodynamics was performed with computer rheograph firm "DX-system."

Results. Cerebral circulation of blood in the carotid (FM), and in vertebrobasilar (OM) systems were found in a qualitative assessment of the patients rheogram. This was confirmed by the analysis of quantitative indicators of workers REG. Significant (P <0,05) increase in DUI, DKI and R, characterizing the state of venous outflow, cerebral vascular tone and the degree of intensity blood supply respectively as in the carotid and especially in vertebrobasilar systems in comparing with the control was established in all three observed groups of patients.

Conclusion. The result of investigation of cerebral hemodynamics showed significant changes in blood vessels of the brain, especially in vertebrobasilar system. The data would serve as diagnostic criteria for state of coal industry workers and also could be used in the treatment of these patients, as well as for determing of physical suitability and career counseling of people for "noise" professions.

KEYWORDS:
acoustic analyzer, sensorineural hearing loss, the noise etiology, cerebral hemodynamics, diagnosis, prevention
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