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What is the percentage for the head in the Rule of Nines for infants?

  1. 9

  2. 12

  3. 18

  4. 20

The correct answer is: 18

In the Rule of Nines, which is a tool utilized to evaluate the percentage of total body surface area (TBSA) affected by burns, the head of an infant is assigned a percentage of 18. This figure reflects the fact that infants have relatively larger heads compared to their body size. For adults, the head accounts for 9% of the TBSA, but in infants, the head's proportion increases due to anatomical differences. Thus, recognizing the unique distribution of body surface area in infants is critical for accurate assessment and treatment planning in burn care. The other percentages listed do not accurately reflect this anatomical understanding in the case of infants.