Effects on blood parameters from hand-arm vibrations exposure

Area of Science:

• Occupational Health
• Hematology
• Biomedical Engineering

Background:

• Handheld tool vibration exposure can lead to neurological symptoms and vibration-induced Raynaud's phenomenon (VRP).
• Pathophysiological mechanisms of VRP are not fully understood, but altered blood parameters like increased viscosity and inflammation may play a role.

Purpose of the Study:

• To investigate the acute effects of handheld vibrating tool exposure on blood parameters in capillary blood from fingers.
• To explore potential hematological changes contributing to VRP.

Main Methods:

• Nine healthy participants exposed to vibration from a handheld tool, with six in a control group.
• Capillary blood samples collected pre- and post-exposure.
• Analysis of blood status and differential leukocyte counts.

Main Results:

• Increased mean erythrocyte volume fraction (EVF), hemoglobin, red blood cell count, white blood cell count, and neutrophils observed post-exposure.
• Statistically significant increases in EVF and neutrophils were noted in capillary blood from the index finger.
• Decreases in mean cell volume, mean cell hemoglobin, and mean cell hemoglobin concentration were also recorded.

Conclusions:

• Acute vibration exposure may elevate EVF and neutrophilic granulocyte levels in index finger capillary blood.
• These hematological changes could be relevant to the development of VRP.
• Further research is warranted to elucidate the precise mechanisms.