Mosteller Body Surface Area calculation uses which measurements?

• A. Age and weight
• B. Height and Weight
• C. Height and age
• D. Weight and serum creatinine

Answer: (B)

The measurement pair used in Mosteller’s body surface area calculation is height and weight. This formula expresses body size directly through how tall a person is and how much they weigh, rather than age or lab values. The standard form is BSA = sqrt((height in cm × weight in kg) / 3600). If you use inches and pounds, you can use BSA = sqrt((height in inches × weight in pounds) / 3131). Age or serum creatinine don’t factor into this calculation because they don’t reliably scale body surface area with overall body size. For example, a person 170 cm tall and weighing 70 kg has a BSA of about 1.82 m^2.