Final answer:
The important consideration for the nurse when changing dressings and applying topical medication to a child's abdomen and leg burns is to wash hands and forearms before and after dressing change.
Step-by-step explanation:
The important consideration for the nurse when changing dressings and applying topical medication to a child's abdomen and leg burns is to wash hands and forearms before and after dressing change. This is essential to maintain proper hygiene and prevent the spread of infection. It is crucial for the nurse to follow strict handwashing protocols to ensure the safety and well-being of the child.