The usual dose of a drug is 25 mg/m2, calculate the dose;(in mg)

Question

for a patient weighing 70 kg and measuring 1.95 m.

DOSE BASED ON BODY SURFACE AREA (BSA)

Formula to use: Mosteller Formula/the Nomogram for determination of BSA from Height and Weight

Answer 1

BSA (m²) = square root (height(cm) x weight(kg) / 3600)

height (cm) = 1.95 m x 100 cm / m = 195 cm

weight (kg) = 70 kg

BSA (m²) = sq.rt. (195 x 70)/3600

BSA (m²) = 1.947m²

Dose = 1.947 m² x 25 mg / 1 m² = 48.68 mg

Dose = 50 mg