Anterior head accounts for what percentage of body surface area in the Rule of Nines?

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Multiple Choice

Anterior head accounts for what percentage of body surface area in the Rule of Nines?

Explanation:
Rule of Nines estimates burn size by dividing the body into regions with fixed percentages. The head and neck together make up 9% of the body’s surface area in an adult. That region is considered as anterior (front) and posterior (back) halves. The front of the head accounts for half of the 9%, which is 4.5%. So the anterior head is 4.5% of TBSA. This breakdown matters because accurate TBSA helps guide fluid resuscitation and monitoring. In children, proportions differ, so different charts are used (Lund-Browder), but for adults, 4.5% for the anterior head is the correct value.

Rule of Nines estimates burn size by dividing the body into regions with fixed percentages. The head and neck together make up 9% of the body’s surface area in an adult. That region is considered as anterior (front) and posterior (back) halves. The front of the head accounts for half of the 9%, which is 4.5%. So the anterior head is 4.5% of TBSA.

This breakdown matters because accurate TBSA helps guide fluid resuscitation and monitoring. In children, proportions differ, so different charts are used (Lund-Browder), but for adults, 4.5% for the anterior head is the correct value.

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