What percentage of body surface is each arm for an infant or toddler?

For an infant or toddler, each arm accounts for approximately 9% of the total body surface area. This percentage is based on the "Rule of Nines," which is typically used in pediatric assessments of burn injuries to estimate the extent of burns over the body.

In this specific demographic, understanding the distribution of body surface area is crucial for calculating fluid resuscitation needs and managing burn treatment effectively. The percentage is determined by considering the overall proportion of body parts relative to the total surface area. In children, the head and torso make up a larger portion of their body surface compared to adults, which influences the assessment of each limb’s contribution.

While the other percentages reflect common estimates used for adults or might be confused with different demographic characteristics, the 9% assigned to each arm for an infant or toddler has been consistently established in pediatric emergency care practices, ensuring that care providers are accurately calculating risks and treatment protocols for younger patients.