A client is receiving oxygen at 2 L/min via a nasal cannula. What oxygen concentration is the client receiving?

28%

70%

509%

36% .

Answer and Explanation

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.

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Correct Answer is B

Explanation

Step 1 is: The prescribed dose is 100 mcg and each tablet contains 50 mcg.
Step 2 is: Divide the prescribed dose by the amount per tablet. So, 100 mcg ÷ 50 mcg/tablet. Step 3 is: The result is 2 tablets.

A. Instruct the client to use a pursed-lip breathing technique. B. Increase the oxygen flow to 3L/min. C. Have the client cough and expectorate secretions. D. Evaluate the client’s respiratory status.

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.

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A client is receiving oxygen at 2 L/min via a nasal cannula. What oxygen concentration is the client receiving?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A nurse is preparing to administer levothyroxine 100 mcg orally to a patient with hypothyroidism. The available levothyroxine is in 50 mcg tablets. How many tablets should the nurse administer?

Correct Answer is B

Explanation

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Correct Answer is D

Explanation

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