What percentage of an infant/toddler's body surface area does the abdomen represent?

In pediatric patients, understanding body surface area is crucial for medical assessment, especially regarding burns or fluid resuscitation. The abdomen in infants and toddlers represents approximately 18% of their total body surface area according to the Rule of Nines, which breaks down the body into sections to facilitate quick assessments. For infants and toddlers, the proportions differ from adults, where the abdomen is slightly larger as a percentage of total body surface area compared to adults. This percentage is an essential factor for calculating medication dosages, fluid requirements, and assessing the severity of burns.

The other percentages do not accurately reflect the specifics for this age group, as they either underrepresent or overestimate the abdominal body surface area based on established pediatric guidelines.