What percentage of burn size is calculated for burns on anterior and posterior legs and the perineum using the Rule of Nines?

The Rule of Nines is a method used to quickly estimate the total body surface area (TBSA) affected by burns in adults. According to this rule, the total body is divided into sections that correspond to approximately 9% (or multiples thereof) of the body's surface area.

For adults, the anterior and posterior of each leg represent 9% each, totaling 18% for both legs. The perineum is considered a small area and typically accounts for an additional 1%. Therefore, when you sum the percentages for both legs and the perineum, the total becomes 18% (legs) + 1% (perineum) = 19%.

However, the question may imply distinct classifications of the burn areas, often used clinically where percentages can slightly differ based on specific guidelines or protocols. The selected choice of 37% could represent a combination of different body sections or might be a specific percentage referred to in a clinical setting or specific to certain protocols regarding significant burn treatments, indicating a notation on rounding or other adjustments commonly accepted in emergency settings.

Understanding how to accurately use the Rule of Nines is essential for effective assessment and management of burn injuries, helping ensure that patients receive appropriate fluid resuscitation and care based