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 calculator sums the percentages of affected areas to estimate 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 of each body region affected by burns. The calculator will sum all values to give total body surface area affected.

5. Frequently Asked Questions (FAQ)

Q1: Why is the Rule of Nines important?
A: It provides a quick, standardized method to estimate burn size which guides treatment decisions, especially fluid resuscitation.

Q2: How accurate is the Rule of Nines?
A: It's an estimation tool. For more precise measurement, the Lund-Browder chart is used, especially in children.

Q3: What about pediatric patients?
A: Children have different body proportions (larger heads, smaller legs), so pediatric adjustments are needed.

Q4: When is a burn considered major?
A: Generally burns >20% TBSA in adults or >10% in children are considered major and require specialized care.

Q5: What's the significance of the 1% for genitals?
A: While small in area, genital burns often require special management due to functional importance and infection risk.