Will phase change material CoolPacks cause vasoconstriction?
A. Not at all. That’s a great benefit of phase change material Cool Packs: They function within a comfortable cooling range that doesn’t allow vasoconstriction of blood vessels, unlike ice. This benefit is important, as nonconstricted blood vessels allow your circulatory system to freely move blood throughout your body, then release heat at the skin surface. With ice, the body is fooled into thinking it’s cold. It reacts by constricting the blood vessels near the skin, limiting the body’s natural cooling system. The heart then works harder, expending extra energy in the chest cavity and creating yet more body heat.
