BSA Calculator Dubois Dubois Formula

BSA Formula:

\[ BSA = 0.007184 \times W^{0.425} \times H^{0.725} \]

Body Surface Area (m²):

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1. What is the DuBois BSA Calculator?

Definition: This calculator estimates body surface area (BSA) using the DuBois and DuBois formula, which relates BSA to weight and height.

Purpose: BSA is used in medical practice for drug dosing, physiological measurements, and clinical assessments.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ BSA = 0.007184 \times W^{0.425} \times H^{0.725} \]

Where:

\( BSA \) — Body Surface Area (square meters)
\( W \) — Weight (kilograms)
\( H \) — Height (centimeters)

Explanation: The formula was derived from measurements of body surface area in humans and provides a good estimate for most clinical purposes.

3. Importance of BSA Calculation

Details: BSA is used to calculate drug dosages for chemotherapy, normalize physiological measurements, and assess metabolic mass.

4. Using the Calculator

Tips: Enter weight in kilograms and height in centimeters. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why use BSA instead of body weight for drug dosing?
A: BSA correlates better with metabolic processes and drug clearance than body weight alone.

Q2: What's the accuracy of the DuBois formula?
A: It's accurate for most adults but may be less precise for very obese or very lean individuals.

Q3: Are there alternative BSA formulas?
A: Yes, other formulas include Mosteller, Haycock, and Boyd formulas, but DuBois is the most widely used.

Q4: How do I convert pounds to kilograms?
A: Divide pounds by 2.205 (1 kg = 2.205 lbs).

Q5: How do I convert feet/inches to centimeters?
A: Multiply feet by 30.48 and inches by 2.54, then add them together.