NCLEX-PN® ExaminationSafety and Infection ControlMedium
An LPN is assisting a client who has a prescription for oxygen therapy via nasal cannula at 2 L/min. The LPN notes that the oxygen humidifier reservoir is empty. What is the most appropriate action for the LPN to take?
- AReplace the empty reservoir with a new, sterile, pre-filled humidifier reservoir.
- BContinue the oxygen therapy without humidification until a new reservoir is obtained.
- CFill the empty reservoir with sterile water and reattach it to the oxygen flowmeter.
- DTemporarily discontinue oxygen therapy until a new humidifier can be set up.
Show answer & explanationAnswer & explanation
Correct answer: C. Fill the empty reservoir with sterile water and reattach it to the oxygen flowmeter.
Oxygen delivered at 2 L/min or higher, especially via nasal cannula, should be humidified to prevent drying of mucous membranes. Filling the empty reservoir with sterile water is the correct and immediate action to ensure proper humidification and client comfort. Sterile water is used to prevent bacterial contamination.
Why the other options are wrong
- A. While a pre-filled reservoir is an option, it's not always immediately available. Filling with sterile water is a common and appropriate practice.
- B. Continuing without humidification can dry mucous membranes, causing discomfort and potential tissue damage.
- D. Discontinuing oxygen therapy, even temporarily, can lead to hypoxemia and is generally not indicated unless there is an immediate safety concern.
Oxygen Humidification
The process of adding moisture to supplemental oxygen to prevent drying and irritation of the client's respiratory mucous membranes, especially at flow rates of 2-4 L/min and above.
- Prevents dryness, epistaxis, and discomfort.
- Uses sterile water to prevent bacterial growth.
- Reservoirs should be checked regularly and refilled as needed.
Memory trick: Humidify to Halt Harshness