In the baby/small child Rule of Nines, what percentage is allocated to the trunk?

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Multiple Choice

In the baby/small child Rule of Nines, what percentage is allocated to the trunk?

Explanation:
In infants, body proportions differ from adults: the head is a larger share of the total body surface area, so the trunk makes up a smaller portion. The baby Rule of Nines assigns about 13% of TBSA to the trunk (combined front and back). This smaller trunk percentage reflects the proportionally larger head and shorter limbs in young children, and it’s the value used in pediatric quick assessments. The other percentages don’t fit these age-related proportions: 18% would align with the adult trunk, which overestimates infants; 9% is too small for the trunk region; 21% is also larger than the typical pediatric trunk share.

In infants, body proportions differ from adults: the head is a larger share of the total body surface area, so the trunk makes up a smaller portion. The baby Rule of Nines assigns about 13% of TBSA to the trunk (combined front and back). This smaller trunk percentage reflects the proportionally larger head and shorter limbs in young children, and it’s the value used in pediatric quick assessments.

The other percentages don’t fit these age-related proportions: 18% would align with the adult trunk, which overestimates infants; 9% is too small for the trunk region; 21% is also larger than the typical pediatric trunk share.

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