North Carolina EMT State Practice Exam

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According to the Rule of 9's, what percentage of a child's body surface area is accounted for by the anterior and posterior torso?

  1. 18%

  2. 27%

  3. 36%

  4. 45%

The correct answer is: 36%

In the assessment of burn injuries using the Rule of Nines, the total body surface area (BSA) is divided into regions that each represent a specific percentage of the body's surface. For children, the formula is adjusted slightly compared to adults because of differences in body proportions. When considering the anterior and posterior torso of a child, the combined surface area typically accounts for a significant percentage. Specifically, each side of the torso (anterior and posterior) is allocated 18% of the total BSA. Therefore, when you add the anterior and posterior together, it totals 36%. This understanding of the Rule of Nines is crucial for determining the extent of burns and guiding appropriate treatment and transport decisions in emergency medical scenarios. While the anterior torso and posterior torso percentages may differ slightly for adults due to size and proportion variations, for a child, the numbers are consistent, reinforcing the importance of recognizing the anatomical differences in assessing burn injuries accurately.

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