Final answer:
The ordered dose of Ancef 20 mg is safe for a child with a BSA of 0.67 m², as pediatric dosages are adjusted based on factors such as body composition and metabolic rate.
Step-by-step explanation:
The ordered dose of Ancef 20 mg is safe for a child with a BSA of 0.67 m². When adjusting dosages for body weight, it is important to consider the differences between adults and children. The average adult dosage of Ancef is 40 mg, which is based on the average weight and surface area of an adult.
However, children have a different body composition and metabolic rate, which can affect how they process and respond to medications. When calculating pediatric dosages, healthcare providers take into account these factors and adjust the dose to ensure safety and efficacy.
In this case, the ordered dose of Ancef 20 mg is appropriate for a child with a BSA of 0.67 m², as it takes into account the child's size and body composition.