Preliminary Study on the Assessment of Peripheral Vascular Response to Cold Provocation in Workers Exposed to Hand-Arm Vibration Using Laser Doppler Perfusion Imager

Measurements of changes in finger skin blood flow with laser Doppler perfusion imaging (LDPI) in response to cold provocation test (10°C, 10 min) were performed in 12 men suffering from vibration induced white finger (VWF) and 13 exposed controls. The mean perfusion values in both groups reduced mar...

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Veröffentlicht in:Industrial Health 2005, Vol.43(3), pp.548-555
Hauptverfasser: MIYAI, Nobuyuki, TERADA, Kazufumi, SAKAGUCHI, Shunji, MINAMI, Yoshihiro, TOMURA, Taro, YAMAMOTO, Hiroichi, TOMIDA, Kotaro, MIYASHITA, Kazuhisa
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container_end_page 555
container_issue 3
container_start_page 548
container_title Industrial Health
container_volume 43
creator MIYAI, Nobuyuki
TERADA, Kazufumi
SAKAGUCHI, Shunji
MINAMI, Yoshihiro
TOMURA, Taro
YAMAMOTO, Hiroichi
TOMIDA, Kotaro
MIYASHITA, Kazuhisa
description Measurements of changes in finger skin blood flow with laser Doppler perfusion imaging (LDPI) in response to cold provocation test (10°C, 10 min) were performed in 12 men suffering from vibration induced white finger (VWF) and 13 exposed controls. The mean perfusion values in both groups reduced markedly as a result of immersion of the hand in cold water. In the controls, however, the mean value increased gradually until the end of the cold provocation, while that in the VWF subjects remained at the lowest level. After removal of the hand from the cold water, the skin blood perfusion in the controls recovered rapidly and nearly reached the baseline value. In the VWF subjects, it had a slight increase immediately following the cold immersion but no tendency to rise as the time span increased. Analysis of covariance controlling for possible confounders revealed that the VWF subjects had significantly lower perfusion values compared to the controls in the last several minutes of the cold provocation and the following recovery. These findings suggest that the LDPI technique enables visualizing and quantifying the peripheral vascular effects of cold water immersion on the finger skin blood perfusion and thus has the potential of providing more detailed and accurate information that may help detect the peripheral circulatory impairment in the fingers of vibration-exposed workers.
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subjects Arm - physiopathology
Blood Vessels - physiopathology
Cold provocation test
Cold Temperature
Finger skin blood perfusion
Hand - physiopathology
Hand-arm vibration
Humans
Immersion
Japan
Laser Doppler perfusion imaging
Laser-Doppler Flowmetry - instrumentation
Male
Occupational Exposure
Vibration - adverse effects
title Preliminary Study on the Assessment of Peripheral Vascular Response to Cold Provocation in Workers Exposed to Hand-Arm Vibration Using Laser Doppler Perfusion Imager
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