Before applying a non-rebreather mask, what must be done with the reservoir bag?

Before applying a non-rebreather mask, the reservoir bag must be inflated to ensure that it contains an adequate amount of oxygen. The purpose of the reservoir bag is to supply a higher concentration of oxygen to the patient. If the bag is not inflated before application, there may not be sufficient oxygen available for the patient, which could compromise their breathing and overall oxygenation.

When the bag is inflated, it can deliver about 90% or more of oxygen concentration as the patient inhales. This is crucial in emergency situations where the individual may be experiencing severe respiratory distress or hypoxia. Properly inflating the bag ensures that it retains enough oxygen to maintain this high concentration during inhalation, helping to effectively support the patient's respiratory needs.

Inflating the bag typically involves connecting the mask to an oxygen source and allowing the bag to fill before placing it on the patient’s face, ensuring immediate access to oxygen as soon as the mask is secured.