Which of the following is an example of a passive hypothermia prevention intervention?

Wrapping the casualty in a survival blanket is an excellent example of a passive hypothermia prevention intervention. This method helps retain body heat without the need for external energy sources or active heat applications. The survival blanket, often made from materials like mylar, is designed to reflect the body’s heat back to the person, thus minimizing heat loss. This is particularly useful in scenarios where maintaining body temperature in a cold environment is crucial.

In contrast, other options involve active interventions. Utilizing a commercially available hypothermia kit typically includes both active and passive components but often relies on external mechanisms for heat generation. Administering warmed intravenous fluids directly warms the body's core temperature, serving as an active method. Using an insulated hypothermia enclosure system with an external active heating source introduces energy-driven approaches to generate heat, further straying from the definition of passive prevention.