In an emergency, when providing oxygen to a non-breathing adult, it is critical to use which device?

In an emergency situation involving a non-breathing adult, utilizing a ventilation mask with an oxygen inlet is paramount for effective oxygen delivery. This device allows for the administration of positive pressure ventilation, which is essential because the individual is unable to breathe on their own. The mask securely fits over the nose and mouth, creating an airtight seal to deliver oxygen directly into the lungs during ventilation maneuvers.

By employing this method, you facilitate a more controlled and efficient transfer of oxygen compared to other devices, ensuring that adequate breaths are provided to sustain oxygen levels in the bloodstream. This is especially important in emergencies where rapid response and effective ventilation can significantly impact the outcomes for the victim.

Other options, such as a nasal cannula or simple face mask, are less effective in a scenario where the patient is not breathing, as they primarily deliver oxygen but do not provide the necessary positive pressure ventilation. An oxygen tent is typically used for patients needing long-term oxygen therapy and is not practical in acute emergency situations.