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Related Experiment Videos

Vasoconstrictor response to cold in forestry workers: a prospective study.

N Olsen1, S L Nielsen

  • 1Department of Clinical Physiology, Hvidovre Hospital, Rigshospitalet, Denmark.

British Journal of Industrial Medicine
|January 1, 1988
PubMed
Summary
This summary is machine-generated.

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Continuing chain saw use worsened cold response in forestry workers, while stopping work improved vibration induced white finger (VWF). A cold provocation test effectively assessed these changes.

Area of Science:

  • Occupational Health
  • Vascular Physiology
  • Ergonomics

Background:

  • Occupational exposure to vibration, particularly from chain saws, is linked to vascular disorders like vibration induced white finger (VWF).
  • Understanding the long-term effects of vibration exposure and preventive measures on vasoconstrictor response is crucial for worker health.

Purpose of the Study:

  • To prospectively investigate the changes in vasoconstrictor response to cold in forestry workers over five years.
  • To evaluate the effectiveness of a cold provocation test in assessing vibration exposure and VWF progression or improvement.

Main Methods:

  • A five-year prospective study involving 37 forestry workers, categorized by their VWF status and work practices.
  • A cold provocation test measuring finger systolic blood pressure during controlled cooling was administered in 1978 and 1983.

Related Experiment Videos

  • Comparison of vasoconstrictor response between workers who continued sawing, stopped sawing, and those with pre-existing VWF.

    • Main Results:

    • Workers continuing chain saw use showed an increased vasoconstrictor response to cold, indicating heightened hyperreactivity.
    • Workers who stopped sawing showed no significant change in cold response.
    • Workers with VWF demonstrated an improvement in vasoconstrictor response and subjective symptoms, particularly after reducing vibration exposure.
    • The cold provocation test proved more sensitive than traditional staging methods for VWF.

    Conclusions:

    • Continued use of anti-vibration chain saws can lead to increased vasoconstrictor hyperreactivity, though subjective symptoms may not always escalate.
    • Reducing or ceasing exposure to vibration can lead to improvement or disappearance of vibration induced white finger.
    • The cold provocation test is a valuable tool for evaluating preventive measures and monitoring vascular responses in occupational settings.