Final answer:
To calculate TBSA% using the Rule of Nines, we add the percentages of each burned body area: 4.5% for the head, 9% for the circumferential left arm, 18% for the anterior trunk, 1% for the genitals, and 9% for each anterior leg portion, totaling 50.5%, with the closest answer being 51%.
Step-by-step explanation:
To determine the Total Body Surface Area (TBSA) percentage using the Rule of Nines, we allocate specific percentages to different body parts that have sustained burns. The anterior head is assigned 4.5%, the circumferential (front and back) of the left arm is 9%, the anterior trunk (including chest and abdomen) is 18%, the genital area is 1%, and each anterior portion of the legs is 9% each. Adding these up: 4.5% (head) + 9% (left arm) + 18% (anterior trunk) + 1% (genital area) + 9% (right leg) + 9% (left leg) yields a total TBSA% of 50.5%. However, the closest answer to our calculation is 51%. Therefore, the correct answer is a. 51%.