Body Surface Area Calculator Chemotherapy

Mosteller Formula:

\[ BSA = \sqrt{\frac{W \times H}{3600}} \]

Body Surface Area (m²):

Definition: This calculator estimates body surface area using the Mosteller formula, commonly used for chemotherapy dosing.

Purpose: It helps medical professionals determine appropriate medication dosages based on a patient's body size.

The calculator uses the Mosteller formula:

\[ BSA = \sqrt{\frac{W \times H}{3600}} \]

Where:

Explanation: The formula calculates BSA by taking the square root of the product of weight and height divided by 3600.

Details: Accurate BSA calculation is crucial for determining chemotherapy doses to maximize effectiveness while minimizing toxicity.

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

Q1: Why use BSA instead of weight alone for chemotherapy?
A: BSA better correlates with metabolic rate and drug distribution than weight alone.

Q2: What's the range of normal BSA values?
A: Average BSA is about 1.7 m² for adult men and 1.6 m² for adult women.

Q3: Are there other BSA formulas?
A: Yes, including Du Bois and Haycock formulas, but Mosteller is most common in clinical practice.

Q4: How accurate is this calculation?
A: It provides a good estimate but may need adjustment for extremes of body habitus.

Q5: Should BSA be rounded in clinical practice?
A: Typically rounded to two decimal places for chemotherapy dosing.