When should you not use an oxygen mask on a child?

• A. When child is asleep
• B. In cases of severe respiratory distress where airway control is uncertain
• C. When the child is playing
• D. During a fever

Answer: (B)

Using an oxygen mask on a child is generally contraindicated in situations that place the airway at risk. In cases of severe respiratory distress where airway control is uncertain, using an oxygen mask may not provide adequate ventilation to the child. If the child's airway is not properly managed or there are concerns about the child’s ability to breathe effectively, supplemental oxygen can potentially exacerbate the problem by causing further airway obstruction or distress. In such circumstances, it is crucial to assess and secure the airway first before attempting to provide oxygen via a mask.

In contrast, situations like when a child is asleep, playing, or has a fever do not inherently preclude the use of an oxygen mask. While ensuring the mask fits correctly during sleep or adjusting it if the child is playing can be important, these conditions do not present the same level of airway risk as severe respiratory distress with an unsure airway situation.