The Rule of Nines is used to estimate the percentage of body surface area burned.

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Multiple Choice

The Rule of Nines is used to estimate the percentage of body surface area burned.

Explanation:
The Rule of Nines is a quick method to estimate the percentage of body surface area burned. In an adult, the body is divided into sections that approximate whole percentages: head and neck 9%, each arm 9%, anterior trunk 18%, posterior trunk 18%, each leg 18%, and the genitals 1%. Adding these gives a rough TBSA burned that clinicians use to gauge severity and help guide initial fluid resuscitation and triage. It’s a practical tool for rapid assessment, but it doesn’t tell you burn depth, and it isn’t precise for blood loss or pain. In children, proportions differ, so age-specific charts like the Lund and Browder are often preferred for accuracy.

The Rule of Nines is a quick method to estimate the percentage of body surface area burned. In an adult, the body is divided into sections that approximate whole percentages: head and neck 9%, each arm 9%, anterior trunk 18%, posterior trunk 18%, each leg 18%, and the genitals 1%. Adding these gives a rough TBSA burned that clinicians use to gauge severity and help guide initial fluid resuscitation and triage. It’s a practical tool for rapid assessment, but it doesn’t tell you burn depth, and it isn’t precise for blood loss or pain. In children, proportions differ, so age-specific charts like the Lund and Browder are often preferred for accuracy.

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