The LPN is assigned to monitor a patient with chronic lung disease who is receiving oxygen via a non-rebreathing mask.Which observation indicates to the nurse that the system is functioning as expected?

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A nonrebreather mask has one or both side vents closed to limit the mixing of room air with oxygen.The vents open to allow expiration but remain closed on inspiration.The reservoir bag has a valve to store oxygen for inspiration but does not allow entry of exhaled air.It is used to deliver oxygen concentrations of 70% to 100%.A.B.D.When a patient is using a partial rebreather or nonrebreather mask,ensure that the reservoir is never allowed to collapse to less than half full.

The LPN Is Assigned to Monitor a Patient with Chronic