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Question 1 of 30

The nurse prepares to administer a new order for a non-rebreather mask. Which action is most important for the nurse to take?

Rationale:
The nurse should ensure the reservoir bag is inflated before placing the non-rebreather mask on the patient. This step guarantees that the patient receives a high concentration of oxygen with each breath by preventing room air from diluting the oxygen supply, thereby maximizing oxygen delivery and effectiveness of the therapy. B: Set the oxygen flow rate to no more than 6 liters per minute risks inadequate inflation of the reservoir bag, reducing oxygen concentration and compromising the purpose of the non-rebreather mask’s high-flow oxygen delivery. C: Assessing the patient’s ability to breathe independently is important but not the immediate priority for mask setup; ensuring the device functions correctly takes precedence before evaluating respiratory effort. D: Monitoring changes in arterial blood gases is essential for ongoing assessment but is not the most critical initial action when preparing to administer oxygen via a non-rebreather mask.