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Máy tính diện tích da

Calculate body surface area (BSA) from height and weight using the Mosteller, Du Bois, Haycock, Gehan–George and Boyd formulas.

For information only. Never use this calculator to determine medication doses; dosing must be done by qualified healthcare professionals.

Phần hướng dẫn bên dưới chưa có bằng tiếng Việt nên được hiển thị bằng tiếng Anh. Bản thân máy tính đã được dịch đầy đủ.

Cách sử dụng máy tính này

  1. Choose your units.
  2. Enter height and weight.
  3. Mosteller is shown as the main result because it is simple and widely used clinically.

Công thức

BSA formulas are empirical fits to measured skin surface area. Height in cm, weight in kg, result in square meters.

Mosteller: BSA = √(height × weight / 3600)
Du Bois: BSA = 0.007184 × W^0.425 × H^0.725
Haycock: BSA = 0.024265 × W^0.5378 × H^0.3964

Example

  1. 175 cm, 75 kg.
  2. Mosteller: √(175 × 75 / 3600) = √3.6458 ≈ 1.909 m².

Câu hỏi thường gặp

What is BSA used for?

BSA is used in medicine to dose some drugs (notably chemotherapy), to index cardiac output, and to estimate kidney function relative to body size.

What is an average BSA?

About 1.9 m² for adult men and 1.6 m² for adult women.

Which formula should I use?

Mosteller is the most common in practice. Haycock was validated in children. Your healthcare team will specify the formula used for any dosing.