In the Adult Rule of Nines, the arm accounts for what percentage of TBSA?

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Multiple Choice

In the Adult Rule of Nines, the arm accounts for what percentage of TBSA?

In this type of burn assessment, a standard chart divides the body into regions with fixed shares so you can estimate a patient’s burn size quickly. The arm is treated as its own region and represents one ninth of the total body surface area. So if one arm is burned, about one ninth of TBSA is involved; both arms would be two ninths. This familiar breakdown helps guide fluid resuscitation decisions and overall management, because the estimated TBSA burned drives formulas used in initial care. The other regions in the Rule of Nines (head and neck, trunk, legs, and perineum) each have their own fixed shares, which is why the arm’s share ends up being one ninth rather than a larger number.

In this type of burn assessment, a standard chart divides the body into regions with fixed shares so you can estimate a patient’s burn size quickly. The arm is treated as its own region and represents one ninth of the total body surface area. So if one arm is burned, about one ninth of TBSA is involved; both arms would be two ninths. This familiar breakdown helps guide fluid resuscitation decisions and overall management, because the estimated TBSA burned drives formulas used in initial care. The other regions in the Rule of Nines (head and neck, trunk, legs, and perineum) each have their own fixed shares, which is why the arm’s share ends up being one ninth rather than a larger number.

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