1. What is the Rule of Nines for Burns?

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 fluid resuscitation needs.

2. How Does the Rule of Nines Work?

The body is divided into regions that represent approximately 9% or multiples of 9% of the total body surface area:

Body Regions:

• Head and neck: 9%
• Each arm: 9% (front and back)
• Each leg: 18% (front and back)
• Front torso: 18%
• Back torso: 18%
• Genitals: 1%

3. Importance of Burn Percentage Calculation

Clinical Significance: Burn percentage helps determine:

• Severity classification (minor, moderate, major)
• Fluid resuscitation requirements
• Need for hospital admission
• Prognosis and survival likelihood

4. Using the Calculator

Instructions: Enter the percentage burned for each body region. The calculator sums these values to give total burn percentage.

Note: For partial burns to a region, estimate the percentage of that specific region affected (e.g., if half the front torso is burned, enter 9%).

5. Frequently Asked Questions (FAQ)

Q1: Is this calculator suitable for children?
A: No, children have different body proportions. Use the Lund-Browder chart for pediatric patients.

Q2: What about the palm method?
A: For small burns, the patient's palm (including fingers) represents about 1% of TBSA.

Q3: How accurate is the Rule of Nines?
A: It provides a quick estimate. For precise measurement, use Lund-Browder charts or digital tools.

Q4: What percentage constitutes a major burn?
A: Typically >20% TBSA in adults, though depth and location are also important factors.

Q5: Why is genital area counted separately?
A: While small (1%), genital burns have special significance for function and infection risk.