APLICATION OF LASER DOPPLER FLOWMETRY IN OCCUPATIONAL PATHOLOGY

Transcription

1 62 VII, 2013, 1.,. APLICATION OF LASER DOPPLER FLOWMETRY IN OCCUPATIONAL PATHOLOGY Zl. Stoyneva Clinic of Occupational Diseases, UMHAT Sv. Ivan Rilski So a : ( ).,,.,. -,,, -,,.,,. -,,,, Raynaud -,,,,., -,..,. :,,,, - :. -,,.,.. 15, 1431,.: (+359 2) , zlatka_stoyneva@yahoo.com Summary. The aim of this work was to present the principles and clinical application of laser Doppler owmetry (LDF) in occupational pathology by assessment of the available literature and our own experience. LDF is based on Doppler principle using laser-generated monochromatic light beam, transducer with optic bers and sensitive photo-detectors. The number of moving blood cells, their velocity and perfusion, which is the product of them both, are being monitored. The accuracy and sensitivity of LDF in clinical practice have been improved by applying standardized functional tests orthostatic, heating, cooling, venoarteriolar re ex, Valsalva maneuver, reactive hyperaemia, etc., for analyzing skin microvascular reactivity, which is a reproducible parameter of sympathetic vasomotor control. Disorders of autoregulation and autonomic function were established in occupationally induced distal autonomic neuropathy of the limbs, radiculopathies, neuropathies, polyneuropathies, secondary Raynaud s phenomenon due to exposure to vibration, cold, overstrain, toxic agents, and electromagnetic elds in the conditions of work. In conclusion, LDF is a contemporary non-invasive easy to apply diagnostic tool. It investigates the blinded sphere in ultrasonography microcirculation and its autoregulation. The method is valuable for objectifying microcirculatory and autonomic disorders in different occupational and environmental diseases, for their expertise and dynamic follow-up.. Key words: laser Doppler owmetry, diagnostic tool, occupational diseases, microcirculation, autonomic disorders Address for coresspondence: Assoc. Prof. Zlatka Stoyneva, MD, PhD, University Hospital St. Ivan Rilski, 15 Acad. Ivan Geshov St., 1431 So a, tel.: (+359 2) , zlatka_stoyneva@yahoo.com

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