Rule Of Nines Calculator

Rule Of Nines Formula:

TBSA % = Head 9% + Torso 18% front + Torso 18% back + Arms 9% each + Legs 18% each + Genitalia 1%

Total Body Surface Area (TBSA):

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1. What is the Rule Of Nines?

The Rule Of Nines is a method used in medicine 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.

2. How Does the Calculator Work?

The calculator uses the Rule Of Nines formula:

TBSA % = Head 9% + Torso 18% front + Torso 18% back + Arms 9% each + Legs 18% each + Genitalia 1%

Where:

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

Explanation: The Rule Of Nines provides a quick way to estimate burn surface area, which is crucial for determining fluid resuscitation and treatment plans.

3. Importance of TBSA Calculation

Details: Accurate TBSA estimation is critical for burn management, including fluid resuscitation, nutritional support, and determining the need for transfer to a burn center.

4. Using the Calculator

Tips: Select all body areas that have been affected by burns. The calculator will automatically sum the percentages to give you the total body surface area affected.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is the Rule Of Nines?
A: While it's a quick estimation tool, the Rule Of Nines may be less accurate for children and obese patients. More precise methods like the Lund and Browder chart may be used in these cases.

Q2: What is considered a major burn?
A: Generally, burns covering more than 20-25% of TBSA in adults are considered major and require specialized care.

Q3: How does the Rule Of Nines differ for children?
A: Children have proportionally larger heads and smaller legs, so modified percentages are used in pediatric patients.

Q4: When should I seek medical attention for burns?
A: Seek immediate medical attention for burns covering more than 10% of TBSA, burns on face, hands, feet, or genitals, or any full-thickness burns.

Q5: Can I use this calculator for partial thickness burns?
A: Yes, the Rule Of Nines can be used to estimate the total area affected regardless of burn depth, though depth is also important for treatment decisions.