Which vital sign change indicates impaired perfusion?

Decreased skin perfusion is an important indicator of impaired perfusion. Perfusion refers to the passage of blood through the blood vessels, delivering oxygen and nutrients to tissues. When skin perfusion decreases, it suggests that there is inadequate blood flow to the skin, which can be an early sign of shock or other serious conditions affecting circulation.

In clinical practice, assessing skin perfusion often involves checking the color, temperature, and moisture level of the skin. If the skin appears pale, cool to the touch, or feels clammy, it indicates that the body is diverting blood away from the skin to prioritize vital organs, signaling potential circulatory problems.

Understanding why this change matters is crucial. Impaired perfusion can lead to tissue hypoxia and damage if not addressed promptly, making it essential for wilderness responders to recognize and act on these signs.