Which method is used to give a rough estimate of the surface area burned on the body of a casualty?

The Rule of 9 is a standardized method used in emergency medicine to estimate the total body surface area (TBSA) affected by burns. It divides the body into sections, each representing approximately 9% (or a multiple thereof) of the body's surface area. This allows first responders and medical personnel to quickly assess the extent of burns in a casualty, which is crucial for determining treatment options and fluid resuscitation needs.

For adults, the head and neck account for 9%, each arm for 9%, the anterior and posterior torso each for 18%, and each leg for 18%. This systematic approach provides a rapid assessment that is vital in emergency situations when time is critical and accurate measurements are challenging.

In contrast, the other options, such as a Burn Chart, ABC Scale, and Burn Index, may involve more detailed assessments or different methodologies that are not as quick or straightforward for initial evaluations. The Rule of 9 remains the most widely used method in emergency settings due to its simplicity and ease of use in acute care environments.