What is a recommended response when a casualty shows signs of shock?

When a casualty shows signs of shock, raising their legs and keeping them warm is a recommended response. This technique is known as the shock position, which helps to improve blood circulation to vital organs by promoting better blood flow back to the heart and brain. Elevating the legs allows gravity to aid in returning blood from the lower extremities, which can be particularly important if the casualty is experiencing a reduction in blood volume due to bleeding or other causes of shock.

Keeping the person warm is also crucial, as shock can cause the body to lose heat, leading to hypothermia. Maintaining body temperature is important for overall recovery and to support the body's physiological responses during this critical state.

In contrast, other options such as leaving the casualty alone, providing food and drink, or encouraging them to walk around could potentially exacerbate their condition or lead to further complications. For example, leaving a person alone may deprive them of necessary monitoring and assistance, while giving them food or drink could pose a choking hazard, especially if they are feeling faint or disoriented. Encouraging them to walk around could worsen their state, as mobility may lead to further falls or decreased stability in an already compromised physiological situation.