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In the Rule of Nines for adults, what percentage is allocated to the head?

  1. 9

  2. 10

  3. 12

  4. 18

The correct answer is: 9

In the Rule of Nines, which is used to estimate the total body surface area (TBSA) affected by burns in adults, the percentage allocated to the head is indeed 9%. This simplified method of assessment divides the body's surface area into sections, each representing approximately 9% (or a multiple thereof) of the total body surface area. The head, in this context, is considered to encompass the entire cranium and face, making it a significant part of the Rule of Nines. Understanding this allocation is crucial for properly assessing burn injuries and determining fluid resuscitation needs, as well as preparing for any necessary surgical interventions. The Rule of Nines is particularly useful in emergency situations to provide quick and effective evaluations by paramedics and other first responders. Other options reflect different percentages that do not correspond with the established guidelines for burn surface area estimation in adults. When using the Rule of Nines, it's important to remember that accurate identification of surface areas affects treatment and outcomes for burn victims.