1. What is the Rule of Nines?

Definition: The Rule of Nines is a method used to estimate the total body surface area (TBSA) affected by burns in adults.

Purpose: It helps medical professionals quickly assess burn severity and determine appropriate treatment.

2. How Does the Rule of Nines Work?

The body is divided into regions, each representing approximately 9% (or multiples of 9%) of the total body surface area:

Key Regions:

• Head and neck: 9%
• Each arm: 9% (total 18% for both arms)
• Each leg: 18% (total 36% for both legs)
• Front torso: 18%
• Back torso: 18%
• Genitals: 1%

3. Importance of Burn Percentage Calculation

Clinical Significance: The percentage helps determine:

• Fluid resuscitation needs
• Burn severity classification
• Hospital admission criteria
• Prognosis estimation

4. Using the Calculator

Instructions: Enter the percentage burned for each body region. The calculator will sum them to give the total %TBSA burned.

5. Frequently Asked Questions (FAQ)

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

Q2: What constitutes a major burn?
A: Typically burns covering >20% TBSA in adults or >10% in children, or burns affecting specific critical areas.

Q3: How do I estimate partial vs. full thickness burns?
A: This calculator doesn't differentiate. Medical assessment is needed to determine burn depth.

Q4: What about burns to the palms?
A: The palm (not including fingers) represents about 1% TBSA and can be used for small burns.

Q5: When should I seek medical attention for burns?
A: Always seek medical care for burns >10% TBSA, or any burns to face, hands, feet, or genitals.