What should be done immediately to prevent hypothermia in burn casualties?

The immediate action to prevent hypothermia in burn casualties is to cover the patient. This is crucial because burn victims are at a higher risk of hypothermia due to the loss of skin integrity. The skin serves as a protective barrier that helps maintain body temperature. When this barrier is compromised, it not only increases fluid loss but also makes it easier for the body to lose heat.

Covering the patient with a blanket or appropriate covering will help provide insulation and maintain body heat. This step is critical in stabilizing the patient’s condition and preventing further complications related to hypothermia, which can significantly affect the patient's ability to recover from burn injuries.

While administering IV fluids and applying cooling gel are important steps in the treatment of burns, they do not address the immediate risk of hypothermia. Heating blankets can be used in the subsequent stages of care, but the priority is to protect the patient from losing heat as soon as possible.