What is identified as the most common mechanism of injury for immersion foot?

• A. Direct heat exposure
• B. Continued wearing of wet socks/footwear
• C. Dry insulated footwear
• D. Exposure to boiling water

Answer: (B)

Immersion foot is a non-freezing cold injury that happens when the feet are exposed to cold, damp conditions for a long time while staying wet. The key factor is the ongoing moisture combined with cold, which leads to vasoconstriction and reduced blood flow to the skin and tissues. Keeping wet socks or footwear on prolongs that exposure, maintaining the cold, moist environment around the feet and preventing warming, so tissue damage develops. Removing the wet footwear and drying and warming the feet promptly helps prevent progression and aids recovery.

Direct heat exposure would cause burns, not immersion foot. Dry insulated footwear helps prevent it by keeping the feet warm and dry. Exposure to boiling water is a burn injury, not immersion foot.