Platelet function and clotting parameters of vibration-exposed foundry workers

Area of Science:

• Occupational Health
• Vascular Physiology
• Hematology

Background:

• Segmental vibration from pneumatic tools is a known occupational hazard.
• Vibration-induced white finger (VWF) is a common condition among exposed workers.
• Early physiological changes in response to vibration exposure require further investigation.

Purpose of the Study:

• To investigate the effects of segmental vibration on platelet aggregation and blood clotting parameters in exposed workers.
• To assess vascular reactivity in workers exposed to hand-arm vibration.
• To correlate vibration exposure levels with physiological changes.

Main Methods:

• Comparative study of 22 vibration-exposed workers and 20 non-exposed referents.
• Measurement of platelet aggregation indices (in vitro and in vivo).
• Analysis of blood clotting parameters and immunoglobulins.
• Cold provocation test to assess digital vascular reactivity.

Main Results:

• No significant differences in platelet aggregation or blood clotting parameters between groups.
• Vibration-exposed workers showed significantly stronger vasoconstriction in digital vessels after cold provocation.
• Prevalence of VWF stages OT, 0N, and 1 observed in exposed workers.

Conclusions:

• Segmental vibration can induce peripheral vascular hyperreactivity in early-stage vasospastic disorders.
• This hyperreactivity occurs independently of alterations in platelet function or blood clotting.
• Occupational vibration exposure poses a risk for developing vascular disorders.