According to the Rule of Nines, in the pediatric population, the head and neck accounts for what percentage of BSA?

According to the Rule of Nines, in the pediatric population, the head and neck accounts for what percentage of BSA?

• A. 9%
• B. 14%
• C. 18%
• D. 1%

Answer: (C)

In children, the head makes up a larger share of body surface area than in adults, so the Rule of Nines assigns the head and neck 18% of the total BSA in the pediatric population. This reflects how the body proportions shift as children grow and gradually approach adult distribution. So, the head and neck are 18% of BSA in kids, while other regions have different percentages (arms about 9% each, legs about 14% each, anterior and posterior trunk about 18% each, and the perineum about 1%). That’s why 18% is the correct figure for the pediatric head and neck. The other numbers correspond to adult head (9%), a leg (14%), or the perineal area (1%), which don’t match the pediatric distribution.

In children, the head makes up a larger share of body surface area than in adults, so the Rule of Nines assigns the head and neck 18% of the total BSA in the pediatric population. This reflects how the body proportions shift as children grow and gradually approach adult distribution.

So, the head and neck are 18% of BSA in kids, while other regions have different percentages (arms about 9% each, legs about 14% each, anterior and posterior trunk about 18% each, and the perineum about 1%). That’s why 18% is the correct figure for the pediatric head and neck. The other numbers correspond to adult head (9%), a leg (14%), or the perineal area (1%), which don’t match the pediatric distribution.