According to the Rule of Nines, what percentage of body surface area does each arm represent?

In the context of the Rule of Nines, which is a method used to assess the total body surface area affected by burns, each arm represents 9% of the total body surface area. This assessment tool divides the body into sections that can quickly sum to provide a percentage for burn injuries, enabling healthcare professionals to quickly estimate the extent of burns for treatment and fluid resuscitation.

The head and neck account for 9%, each leg for 18%, and the anterior and posterior torso each account for 18%, while the total body surface area adds up to 100%. Understanding these percentages is crucial for managing burn victims in acute care, as the treatment approach can vary significantly based on the extent of the burn injury. Thus, knowing that each arm contributes 9% is fundamental to accurately assessing burn severity and planning appropriate interventions.