In which situation can a pocket mask be used for rescue breathing?

A pocket mask can be effectively used for rescue breathing in situations where the victim's mouth is injured. This is because the primary function of a pocket mask is to create a seal over the victim's mouth and nostrils, allowing the rescuer to deliver breaths without direct mouth-to-mouth contact. This is particularly useful when there are injuries or trauma that may make conventional rescue breathing difficult or unsafe.

Using a pocket mask allows the rescuer to minimize the risk of further injury, contamination, or transmission of infections, which can be crucial in emergency situations where the victim may be bleeding or have an obstructed airway due to facial injuries. In contrast, when the victim is conscious, capable of breathing, or has an intact mouth, other methods of airway management may be more appropriate. In the case of a child, while a pocket mask can be used, the choice between using a mask or performing rescue breaths would depend on the specific circumstances rather than the child's age alone.