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…showed last 75 words of 1803 total…contact with cooler objects. It occurs when patients are in contact with metal carts the ground or fluids. (Ruffolo p.48) Convection refers to the transfer of heat by movement of air or liquids over skin. Drafts, irrigation fluids, preparation solution, or baths can contribute to heat loss. Ruffolo Evaporation is the transfer of heat to the air from moist skin or mucous membranes. It occurs through wet skin, open body cavities and the respiratory tract.