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, allowing for quick assessment of burn extent.

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 add up to 100% of the body surface area. For children, the percentages are adjusted as their body proportions differ from adults.

3. Importance of Burn Percentage Calculation

Details: Accurate burn surface area estimation is crucial for determining fluid resuscitation needs, prognosis, and treatment decisions in burn patients.

4. Using the Calculator

Tips: Check all body regions that have burns. The calculator will sum the percentages of the selected areas to give the total burn percentage.

5. Frequently Asked Questions (FAQ)

Q1: Is the Rule of Nines accurate for children?
A: No, children have different body proportions. The Lund and Browder chart is more accurate for pediatric patients.

Q2: What constitutes a major burn?
A: Generally, burns covering >20% TBSA in adults or >10% in children are considered major burns requiring specialized care.

Q3: How do you account for partial thickness burns?
A: Only areas with at least partial thickness (second degree) burns should be included in the calculation.

Q4: What about burns on palms or other small areas?
A: For small burns, the "rule of palm" can be used (patient's palm ≈ 1% of TBSA).

Q5: When should I use this calculation?
A: This is primarily for initial assessment. Detailed evaluation should follow in a medical setting.