1. What is the Rule of Nines?

The Rule of Nines is a method used to estimate the total body surface area (TBSA) affected by burns. It divides the body into sections that represent 9% or multiples of 9% of the total body surface area.

2. How Does the Calculator Work?

The calculator uses the Rule of Nines formula:

Where:

• Head — 9% of TBSA
• Each Arm — 9% of TBSA
• Each Leg — 18% of TBSA
• Front Torso — 18% of TBSA
• Back Torso — 18% of TBSA
• Genitals — 1% of TBSA

Explanation: The percentages are added together based on the burned areas to calculate total burn surface area.

3. Importance of TBSA Calculation

Details: Accurate TBSA estimation is crucial for determining fluid resuscitation needs, prognosis, and treatment planning for burn patients.

4. Using the Calculator

Tips: Enter the percentage burned for each body region. The calculator will sum all values to give total burn surface area percentage.

5. Frequently Asked Questions (FAQ)

Q1: Why is the Rule of Nines important?
A: It provides a quick estimate of burn size which is critical for initial treatment decisions, especially fluid resuscitation.

Q2: Are there different Rules of Nines for adults and children?
A: Yes, children have proportionally larger heads and smaller legs, requiring adjusted percentages.

Q3: What's considered a major burn?
A: Generally burns >20% TBSA in adults or >10% in children/elderly, or burns involving special areas (face, hands, feet, genitals).

Q4: What are the limitations of the Rule of Nines?
A: It's less accurate for very small or irregular burns, and doesn't account for burn depth.

Q5: How does this relate to the Lund-Browder chart?
A: Lund-Browder is more accurate (especially for children) but requires a detailed diagram, while Rule of Nines is quicker for initial assessment.