A client is brought to the emergency department after sustaining second- and third-degree burns on the right anterior arm, right posterior arm, and right anterior leg. Using the Rule of Nines, what is the total body surface area that has been burned?

A. 18%: Using the Rule of Nines for adults, each arm represents 9% of the total body surface area, with 4.5% for the anterior surface and 4.5% for the posterior surface. The anterior surface of the right leg accounts for 9%. Adding these areas together: right anterior arm 4.5% + right posterior arm 4.5% + right anterior leg 9% = 18%. This accurately reflects the TBSA. B. 36%: A total of 36% would correspond to burns covering both anterior and posterior surfaces of both arms and legs or other extensive areas, which exceeds the areas described for this client. C. 27%: This percentage overestimates the burn size because it might assume both anterior and posterior surfaces of the leg are affected, but only the anterior leg is burned in this scenario. D. 9%: A TBSA of 9% represents a single entire limb or half of the body (anterior or posterior), which underestimates the extent of this client’s burns.