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Body Surface Area (BSA) is used in medicine to calculate drug doses, burn area, and cardiac output. The Mosteller formula is the most widely used due to its simplicity.

Công thức

Mosteller: BSA (m²) = √(Height(cm) × Weight(kg) / 3,600); DuBois: BSA = 0.007184 × H^0.725 × W^0.425

BSA: Body Surface Area (m²)
H: Height (cm)
W: Weight (kg)

Hướng dẫn từng bước

1Mosteller: BSA (m²) = √(Height(cm) × Weight(kg) / 3,600)
2DuBois: BSA = 0.007184 × H^0.725 × W^0.425
3Boyd: accounts better for extremes of weight
4Normal adult BSA: approximately 1.7–1.9 m²

Ví dụ có lời giải

đầu vào

175cm, 70kg (Mosteller)

Kết quả

BSA = √(175×70/3600) = √3.403 = 1.845 m²

Câu hỏi thường gặp

Why is BSA used instead of weight for drug dosing?

BSA correlates better with physiological processes (metabolic rate, organ function) than weight alone.

What's the normal adult BSA range?

Typically 1.7–1.9 m². Average adult ≈ 1.8 m². Children much smaller proportionally.

Which formula should I use?

Mosteller is simpler and preferred in most modern clinical settings. DuBois and Boyd for specific populations.