What is an appropriate delivery device for an unresponsive child who is not breathing normally?

When dealing with an unresponsive child who is not breathing normally, the use of a bag-mask device with a reservoir bag is the most appropriate choice for delivering positive pressure ventilation. This device allows for effective ventilation, ensuring that the child receives enough oxygen quickly.

The bag-mask device can effectively provide a higher concentration of oxygen and is designed to help maintain an adequate airway, especially in cases of unconsciousness where natural breathing is absent or insufficient. The reservoir bag allows for a larger volume of oxygen to be delivered than with other methods, ensuring the child gets the necessary respiratory support.

Other options, such as low-flow nasal cannulas or face masks, do not provide the same level of oxygen concentration or ventilatory support required in emergencies involving unresponsive patients. Low-flow devices are typically suited for patients who can breathe some of their own air or who need supplemental oxygen but are not in a critical condition. In an emergency, particularly when the patient is unresponsive and unable to breathe independently, it is crucial to use a device that maximizes air delivery and supports ventilation effectively.