A nurse is caring for a client who is receiving oxygen at 2 L/min via a nasal cannula. The nurse recognizes the client is receiving which of the following inspired oxygen concentration?
36%
70%
50%
28%
The Correct Answer is D
D. 28%:
When a client receives oxygen via a nasal cannula at a flow rate of 2 L/min, the approximate inspired oxygen concentration is around 24-28%. This is because each liter of oxygen delivered through a nasal cannula adds approximately 4% to the baseline room air concentration of 21%. Therefore, at 2 L/min, the client would be receiving approximately 24-28% inspired oxygen concentration.
A. 36%, B. 70%, C. 50%:
These percentages are not consistent with the oxygen concentration delivered via a nasal cannula at 2 L/min. Higher flow rates or alternative oxygen delivery systems, such as masks or high-flow nasal cannula, would be needed to achieve these concentrations.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Airborne:
Airborne precautions are used for infections transmitted via small droplet nuclei that remain suspended in the air for long periods and can be inhaled by others. Examples of diseases requiring airborne precautions include tuberculosis, measles, and chickenpox. Pertussis is not transmitted via the airborne route.
B. Contact:
Contact precautions are used for infections spread by direct or indirect contact with the client or their environment. Examples include Clostridioides difficile, methicillin-resistant Staphylococcus aureus (MRSA), and vancomycin-resistant enterococci (VRE). Pertussis is primarily spread through respiratory droplets rather than contact with contaminated surfaces.
C. Droplet:
Pertussis is primarily spread through respiratory droplets when an infected person coughs or sneezes. The nurse should initiate droplet precautions to prevent the transmission of the bacteria to others. These include wearing a surgical mask when within 3 feet of the client, placing the client in a private room or cohorting with another client who has the same infection, and ensuring that visitors wear masks and practice hand hygiene.
D. Protective:
Protective precautions, also known as reverse isolation, are used to protect clients who have compromised immune systems from exposure to pathogens. This precaution is not relevant for a client with pertussis; instead, the focus is on preventing transmission to others through droplet precautions.
Correct Answer is D
Explanation
A) "It's a good idea to help make sure your husband can sleep comfortably.":
This encourages the partner to administer medication, which can lead to overmedication and potential harm.
B) "Why do you think your husband needs more medication when he is asleep?":
This might cause the partner to feel defensive. It also does not provide the necessary education about the correct use of the PCA pump.
C) "Next time you think he needs more medication, call me and I'll push the button.":
This is inappropriate as well. It does not address the core issue that only the patient should be pressing the button to ensure safe and appropriate use of the PCA pump.
D) "Your husband should decide when more medication is needed.":
This educates the partner about the proper use of the PCA pump, emphasizing that only the patient should press the button to ensure they are receiving medication only when they feel pain. This minimizes the risk of overmedication and adverse effects.
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