What percentage is assigned to each arm in the Rule of Nines for burn injuries?

In the context of the Rule of Nines, used for estimating the total body surface area (TBSA) affected by burns, each arm is assigned a percentage of 9%. This method simplifies the calculation of burn injury severity by dividing the body into sections that correspond to multiples of nine.

Specifically, the torso and legs are proportionally larger areas, while the arms, being smaller limbs, are assigned a lower percentage. By allocating 9% to each arm, healthcare providers can quickly assess the extent of burns, which is crucial for treatment decisions, fluid resuscitation, and overall management of the patient with burn injuries.

This allocation aligns with the established consensus in burn care, making it a fundamental aspect of emergency medicine practice. Understanding this rule is essential for any healthcare professional involved in the treatment of burns, as accurate estimation of burn size impacts patient outcomes significantly.