Body Surface Area Calculator Dubois

DuBois Formula:

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

Body Surface Area (m²):

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1. What is Body Surface Area (BSA) Calculator?

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

Purpose: BSA is used in medical practice to calculate drug dosages, chemotherapy regimens, and various physiological measurements.

2. How Does the Calculator Work?

The calculator uses the DuBois 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 height, weight, and BSA in a small number of individuals and remains widely used in clinical practice.

3. Importance of BSA Calculation

Details: BSA provides a more accurate measure of metabolic mass than body weight alone, as it accounts for both height and weight.

4. Using the Calculator

Tips: Enter weight in kilograms and height in centimeters. Both values must be greater than 0.

5. Frequently Asked Questions (FAQ)

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

Q2: How accurate is the DuBois formula?
A: It's reasonably accurate for most adults but may be less accurate for very muscular, obese, or pediatric patients.

Q3: Are there alternative BSA formulas?
A: Yes, other formulas include Mosteller, Haycock, and Gehan-George, but DuBois remains the most widely used.

Q4: When is BSA particularly important?
A: Especially critical for chemotherapy dosing, pediatric medicine, and burn treatment calculations.

Q5: How do I convert pounds to kilograms?
A: 1 pound = 0.453592 kg. For inches to centimeters: 1 inch = 2.54 cm.