A client is receiving oxygen at 2 L/min via a nasal cannula. What oxygen concentration is the client receiving?
28%
70%
509%
36% .
The Correct Answer is A
The correct answer is Choice A. The client is receiving an oxygen concentration of 28%. Nasal cannulas can deliver oxygen at a flow rate ranging from 1 to 6 liters per minute (L/min), with
each additional liter increasing the fraction of inspired oxygen (FiO2) by 4%. Therefore, at 2 L/min, the client is receiving an oxygen concentration of 28%78.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A rationale
Pursed-lip breathing can help improve oxygenation and reduce shortness of breath in clients with COPD. However, it is not the priority action when a client reports difficulty breathing.
Choice B rationale
Increasing the oxygen flow rate without a physician’s order can lead to oxygen toxicity or suppress the respiratory drive in clients with COPD. Therefore, this is not the priority action.
Choice C rationale
Coughing and expectorating secretions can help clear the airways, but it is not the priority action when a client reports difficulty breathing.
Choice D rationale
Evaluating the client’s respiratory status is the priority action. The nurse should assess the client’s breath sounds, respiratory rate, use of accessory muscles, and oxygen saturation to determine the severity of the client’s difficulty breathing and guide further interventions.
Correct Answer is A
Explanation
Choice A rationale
Placing a bath seat in the shower is a good safety measure for a patient with a history of falls. It allows the patient to sit while bathing, reducing the risk of slipping and falling.
Choice B rationale
Keeping the fluorescent ceiling light on in the room at night can actually increase the risk of falls. It can create shadows and glare that can be disorienting, especially for older adults.
Choice C rationale
Placing an area rug at the entry of the bathroom is not recommended. Rugs can easily become tripping hazards, especially if they’re not secured to the floor.
Choice D rationale
Keeping a walker at the end of the bed can be helpful for some patients, but it’s not the best indication that the patient understands home safety instructions. It’s important that the walker is used correctly and that the patient’s home is arranged to accommodate its use.
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