Estimate body surface area in square meters using standard medical equations.
Overview
Body surface area (BSA) is commonly used in medicine, especially for chemotherapy dosing, fluid estimates, and physiologic indexing.
Different formulas exist, but Mosteller is popular because it is simple and close to more complex models.
Steps
Use current measured body weight.
Use standing measured height.
Select Mosteller, Du Bois, or another method.
Read result in m^2.
Use with protocol-specific dosing equations.
Update with large weight shifts during treatment.
Math
Mosteller BSA = sqrt((height(cm) x weight(kg)) / 3600)
Mosteller approximates body surface area by combining height and weight under a square-root scaling relationship.
Worked cases
BSA = sqrt((170 x 70)/3600) = sqrt(3.3056) = 1.82
BSA = 1.82 m^2
BSA = sqrt((155 x 52)/3600) = 1.50
BSA = 1.50 m^2
Total dose = 75 x 1.82 = 136.5 mg
Approximate dose: 136.5 mg
Why use this
Questions