Final answer:
The most appropriate action for an RT to take when treating a child with burns and potential inhalation injury is to switch to a non-rebreather mask, which can deliver higher concentrations of oxygen to support healing.
Step-by-step explanation:
A 10-year-old child arriving at the Emergency Department (ED) with second and third-degree burns to the neck and upper chest, singed nasal hairs, and soot in the nares and oropharyngeal area requires careful respiratory management. Given that the child is already receiving oxygen by a simple mask at 10L/min and has an SPO2 of 100%, switching to a non-rebreather mask is the most appropriate action. This type of mask can deliver higher concentrations of oxygen and ensure there is a reserve supply of oxygen in the mask, reducing the risk of the child inhaling air with a low oxygen concentration.
Oxygen therapy is critical in the setting of burns and potential inhalation injury, as it helps to maintain tissue oxygenation and supports the healing process. Increased oxygen demand or complications from inhalation injuries may not be immediately apparent, and a non-rebreather mask allows for the highest possible oxygen delivery to the patient.