Using the Rule of Nines in an adult, what is the total body surface area burned for: partial-thickness burns of the chest and abdomen, the perineum, and the entire anterior surface of both legs?

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Multiple Choice

Using the Rule of Nines in an adult, what is the total body surface area burned for: partial-thickness burns of the chest and abdomen, the perineum, and the entire anterior surface of both legs?

Explanation:
Rule of Nines uses fixed body-area percentages to estimate TBSA quickly. The front of the trunk (chest and abdomen) is 18%, and the perineum is 1%. Each leg’s front surface accounts for 9%, so both legs add up to 18%. Adding these areas together gives 18 + 1 + 18 = 37%. Depth of burn (partial-thickness) doesn’t change the percentage used for TBSA in this quick estimation—the Rule of Nines focuses on area. So the total burned body surface area is 37%.

Rule of Nines uses fixed body-area percentages to estimate TBSA quickly. The front of the trunk (chest and abdomen) is 18%, and the perineum is 1%. Each leg’s front surface accounts for 9%, so both legs add up to 18%. Adding these areas together gives 18 + 1 + 18 = 37%. Depth of burn (partial-thickness) doesn’t change the percentage used for TBSA in this quick estimation—the Rule of Nines focuses on area. So the total burned body surface area is 37%.

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