A patient was admitted in the emergency ward with burn injury of the face, neck, anterior chest and both arms and hands. Using the rule of nine, calculate the total body surface area burned?

Appeared in: RUHS, Jaipur, PB B.Sc Nursing Entrance-2020

Explanation

The Rule of Nines is a standardized method for rapidly assessing the percentage of the body affected by burns in adults.
The calculation for this patient involves summing the percentages for the specific areas burned.
Anterior head and neck (face and neck) accounts for 4.5%.
The anterior chest accounts for 9%.
Both full arms account for 18% (9% each).
The total calculated area is 4.5% + 9% + 18% = 31.5%, making 31% the closest answer.

Option A: 18% is an incorrect calculation. This percentage would typically represent either the entire anterior trunk or both arms alone, but not the combination of injuries described.
Option B: 22% does not correspond to the correct sum of the affected body parts according to the Rule of Nines.
Option D: 40% significantly overestimates the burn area. This value might be reached if one incorrectly included the entire trunk (36%) plus other areas.

Clinical Relevance

Nursing practice connection: Prioritize focused assessment, early escalation, and real-time monitoring when managing Calculation of Total Body Surface Area (TBSA) using the Rule of Nines for an adult burn patient in acute care settings.
Accurate TBSA calculation is critical for determining the volume of intravenous fluids needed for resuscitation, often calculated using formulas like the Parkland formula (4 mL x body weight in kg x %TBSA).
Underestimation of TBSA can lead to inadequate fluid resuscitation, hypovolemic shock, and organ failure. Overestimation can lead to fluid overload, pulmonary edema, and compartment syndrome.
What if the patient was a 1-year-old child? The 'Rule of Nines' would be inaccurate. The Lund-Browder chart is the preferred method for children, as it accounts for the different body proportions, such as a larger head and smaller limbs relative to body size.

How to Approach the Question

First, identify the key task in the question, which is to calculate the Total Body Surface Area (TBSA) of a burn using the 'Rule of Nines'.
Recall the standard percentages assigned to each body part for an adult under the Rule of Nines.
Carefully read the description of the patient's injuries to identify all affected areas: face, neck, anterior chest, and both arms and hands.
Assign the correct percentage to each burned area: Anterior head/neck = 4.5%; Anterior chest = 9%; Both arms = 18% (9% each).
Sum the percentages for all the affected areas to get the total TBSA: 4.5 + 9 + 18 = 31.5%.
Compare your calculated total with the given options and select the one that is closest to your result.

Concept Tested & Keywords

Concept Tested: Calculation of Total Body Surface Area (TBSA) using the Rule of Nines for an adult burn patient.
Stem keywords: burn injury, face, neck, anterior chest, both arms, hands, rule of nine, total body surface area
Lead-in keywords: calculate
Clinical cues: The care setting changes urgency, monitoring level, and the expected nursing action.
Negative lead-in flag: false

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