A single arm of a child accounts for what percentage of body surface area according to the Rule of 9's?

In the context of the Rule of Nines, which is a method for estimating the total body surface area (TBSA) affected by burns, a single arm of a child accounts for 9% of the total body surface area. The Rule of Nines divides the body into sections that represent 9% or multiples of 9% of the body's surface area. For children, an arm is recognized as contributing 9% since they have proportionally smaller bodies compared to adults, where the calculation for an arm is typically 9% for each arm. This rule provides a quick and effective way for emergency responders, including Advanced EMTs, to assess burn severity and determine treatment priorities. Understanding this percentage is crucial in managing burn care and calculating fluid resuscitation requirements.