Final answer:
Before applying a nonrebreathing mask, the reservoir bag must be properly inflated to ensure a continuous flow of oxygen for the patient when inhaling.
Step-by-step explanation:
The question pertains to correctly preparing a nonrebreathing mask before administering it to a patient. Prior to applying a nonrebreathing mask to a patient, it is crucial to ensure that the reservoir bag is properly inflated. This is important because the reservoir bag must be filled with oxygen so that the patient can breathe in enough oxygen before exhaling.
The reservoir bag of a nonrebreathing mask collects oxygen from the oxygen supply source. It should be filled so that it appears fully inflated and ensures a continuous flow of oxygen when the patient inhales. If the bag is not properly inflated, the patient may breathe in an insufficient amount of oxygen, which can be detrimental, particularly in a medical emergency or for individuals requiring high levels of supplemental oxygen.