BSA Calculator Mosteller And Dubois

BSA Formulas:

\[ \text{Mosteller: } BSA = \sqrt{\frac{W \times H}{3600}} \] \[ \text{DuBois: } BSA = 0.007184 \times W^{0.425} \times H^{0.725} \]

Mosteller BSA:

DuBois BSA:

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1. What is Body Surface Area (BSA)?

Body Surface Area (BSA) is the measured or calculated surface area of the human body. It's an important measurement in medicine, particularly for calculating drug dosages and medical indicators.

2. Mosteller vs DuBois Formulas

The calculator uses two common BSA formulas:

\[ \text{Mosteller: } BSA = \sqrt{\frac{W \times H}{3600}} \] \[ \text{DuBois: } BSA = 0.007184 \times W^{0.425} \times H^{0.725} \]

Where:

\( W \) — Weight in kilograms (kg)
\( H \) — Height in centimeters (cm)
\( BSA \) — Body Surface Area in square meters (m²)

Explanation: The Mosteller formula is simpler and easier to calculate, while the DuBois formula was derived from direct measurements and is considered more accurate.

3. Clinical Importance of BSA

Details: BSA is used to calculate drug dosages for chemotherapy, anticoagulants, and other medications where body size affects pharmacokinetics. It's also used to index cardiac output and other physiological measurements.

4. Using the Calculator

Tips: Enter weight in kilograms and height in centimeters. Both values must be positive numbers. The calculator will provide results using both Mosteller and DuBois formulas.

5. Frequently Asked Questions (FAQ)

Q1: Which formula is more accurate?
A: DuBois is generally more accurate as it was derived from direct measurements, but Mosteller is widely used due to its simplicity and produces similar results in most cases.

Q2: What are typical BSA values?
A: Average BSA is about 1.7 m² for adult men and 1.6 m² for adult women. Children have smaller values that increase with age.

Q3: When is BSA used vs BMI?
A: BSA is used for drug dosing and physiological measurements, while BMI (Body Mass Index) is used for assessing weight categories (underweight, normal, overweight, obese).

Q4: Are there limitations to BSA calculations?
A: Formulas may be less accurate in very obese or very muscular individuals, and in extreme height/weight cases.

Q5: Why are there different BSA formulas?
A: Different researchers developed formulas based on different measurement techniques and populations. Mosteller is a simplified version that approximates more complex formulas.