What is the "Rule of Nines" used for?

The "Rule of Nines" is a method specifically designed for assessing the extent of burns in adults. It provides a quick and effective way to estimate the total body surface area (TBSA) that has been burned, which is crucial for guiding treatment decisions and fluid resuscitation. According to this rule, the body is divided into sections, each representing approximately 9% (or multiples of 9%) of the total body surface area. For example, the head and neck account for about 9%, each arm accounts for 9%, each leg accounts for 18%, the anterior trunk is 18%, and the posterior trunk is also 18%. This system allows first responders and medical personnel to rapidly evaluate the severity of burns and prioritize care, especially in emergency situations.