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Question 1 of 5

A nurse is caring for a client who is receiving oxygen at $2 \mathrm{~L}/\min$ via a nasal cannula. The nurse recognizes the client is receiving which of the following inspired oxygen concentration?

Correct Answer: D

Rationale: The correct answer is D (28%).
To calculate the inspired oxygen concentration, use the formula: %O2 = (L/min of oxygen × 4) + 21. So, %O2 = (2 × 4) + 21 = 28%. This formula accounts for the estimated oxygen concentration delivered by a nasal cannula. The other choices are incorrect because they do not reflect the accurate calculation based on the oxygen flow rate and the device being used.

Question 2 of 5

Correct Answer:

Rationale:

Question 3 of 5

Correct Answer:

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Question 4 of 5

Correct Answer:

Rationale:

Question 5 of 5

Correct Answer:

Rationale:

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