Dubois Formula Calculator
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The Dubois formula is a mathematical equation used to estimate the Body Surface Area (BSA) of a person based on their weight and height. BSA is often used in medical settings to calculate dosages for medications and to assess metabolic rates.
Historical Background
The Dubois formula was developed in 1916 by Drs. Eugene Dubois and Delafield Du Bois, who were interested in understanding the relationships between body size and metabolism. The formula became widely accepted due to its accuracy and simplicity in calculating BSA.
Calculation Formula
The Dubois formula is expressed as:
\[ \text{BSA} = 0.007184 \times \text{Weight}^{0.425} \times \text{Height}^{0.725} \]
- Weight is in kilograms (kg)
- Height is in centimeters (cm)
- BSA is calculated in square meters (m²)
Example Calculation
For a person weighing 70 kg and with a height of 170 cm:
\[ \text{BSA} = 0.007184 \times 70^{0.425} \times 170^{0.725} \approx 1.84 \text{ m²} \]
Importance and Usage Scenarios
BSA is particularly important in clinical settings, such as determining appropriate chemotherapy doses or assessing renal function. It's also used to normalize physiological parameters, allowing for more accurate comparisons between individuals of different body sizes.
Common FAQs
-
What is Body Surface Area (BSA)?
- BSA is a measure of the total surface area of the human body, often used in medical calculations to ensure proper dosing and physiological assessments.
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Why is the Dubois formula commonly used?
- The Dubois formula is widely used because it provides a reliable estimation of BSA based on simple and readily available measurements (weight and height).
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How accurate is the Dubois formula?
- The Dubois formula is considered highly accurate for most populations, though there are other formulas like the Mosteller or Haycock formulas that might be used in specific cases.
This calculator helps medical professionals and individuals to quickly estimate their BSA, aiding in various health-related calculations and decisions.