1. What is the Mosteller Formula?

The Mosteller formula is a simple and widely used method to calculate body surface area (BSA) from height and weight. It provides an estimate of the total surface area of the human body, which is important for many medical applications.

2. How Does the Calculator Work?

The calculator uses the Mosteller formula:

Where:

• \( W \) — Weight in kilograms (kg)
• \( H \) — Height in centimeters (cm)
• \( BSA \) — Body surface area in square meters (m²)

Explanation: The formula calculates the square root of the product of weight and height divided by 3600, providing a quick and reliable estimate of body surface area.

3. Importance of BSA Calculation

Details: BSA is used in many medical settings including chemotherapy dosing, calculating cardiac index, determining renal clearance, and adjusting drug dosages for both children and adults.

4. Using the Calculator

Tips: Enter weight in kilograms and height in centimeters. Both values must be greater than zero. For accurate results, use precise measurements.

5. Frequently Asked Questions (FAQ)

Q1: Why use Mosteller formula instead of others?
A: The Mosteller formula is simple, validated, and widely accepted. It's as accurate as more complex formulas and easier to calculate.

Q2: What are normal BSA values?
A: Average BSA is about 1.7 m² for adult men and 1.6 m² for adult women, but varies with body size.

Q3: When should BSA be used for drug dosing?
A: BSA-based dosing is common for chemotherapy, some antibiotics, and other drugs where toxicity correlates with body size.

Q4: Are there limitations to BSA calculations?
A: BSA doesn't account for body composition (muscle vs fat). In obese patients, adjusted or ideal body weight may be more appropriate.

Q5: Can this be used for children?
A: Yes, the Mosteller formula is appropriate for all ages, though pediatric dosing often requires additional considerations.