What percentage of the body surface area (TBSA) is accounted for by an infant's head according to the Rule of Nines?

According to the Rule of Nines, which is a method used to estimate the total body surface area (TBSA) burned in patients, the head of an infant accounts for approximately 9% of the TBSA. This is because the Rule of Nines divides the body into sections that represent roughly 9% or multiples thereof, making it a useful tool for quickly assessing burn severity and guiding treatment decisions.

In infants, the head is proportionally larger compared to the rest of their body than it is in adults. Therefore, while the head represents 9% of the TBSA for infants, adults have different proportions where the head accounts for a smaller percentage. This large proportion of the head in infants is crucial for healthcare providers to understand, as burns in this area can have significant physiological implications due to the infant's relatively smaller total surface area which impacts fluid resuscitation and other management strategies.