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

Definition: This calculator estimates the body surface area of children using the Haycock formula, which is specifically validated for paediatric use.

Purpose: BSA is crucial in paediatric medicine for determining proper drug dosages, chemotherapy regimens, and nutritional requirements.

2. How Does the Calculator Work?

The calculator uses the Haycock formula:

Where:

• \( BSA \) — Body Surface Area (square meters)
• \( W \) — Weight (kilograms)
• \( H \) — Height (centimeters)

Explanation: The formula provides a more accurate estimation for children than adult BSA formulas like Du Bois or Mosteller.

3. Importance of BSA Calculation in Paediatrics

Details: Many paediatric medications are dosed by BSA rather than weight alone, as metabolic rate correlates better with surface area than weight.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: Why use Haycock instead of other BSA formulas?
A: The Haycock formula was specifically developed and validated for paediatric populations, providing more accurate results for children.

Q2: What age range is this calculator appropriate for?
A: While it can be used for all ages, it's most accurate for children from birth through adolescence.

Q3: How precise should my measurements be?
A: For medical purposes, weight should be measured to nearest 0.1 kg and height to nearest 0.5 cm.

Q4: Can this be used for premature infants?
A: For very low birth weight or premature infants, consult a neonatologist as specialized formulas may be needed.

Q5: Why is BSA important in chemotherapy dosing?
A: Chemotherapy drugs target rapidly dividing cells, and BSA better represents the number of cells than weight alone.