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 C

Explanation

Choice A rationale
Rapid respirations that are unusually deep and regular are not indicative of Cheyne-Stokes respirations. Cheyne-Stokes respirations are characterized by periods of apnea followed by gradually increasing then decreasing tidal volumes until another period of apnea.
Choice B rationale
An inability to breathe without dyspnea unless sitting upright is not indicative of Cheyne- Stokes respirations. This is more characteristic of orthopnea, which is commonly seen in conditions like heart failure.
Choice C rationale
Breathing ranging from very deep to very shallow with periods of apnea is indicative of Cheyne-Stokes respirations. This pattern of breathing is often seen in conditions such as heart failure, stroke, or brain damage.
Choice D rationale

Shallow breathing alternating with periods of apnea is not indicative of Cheyne-Stokes respirations. In Cheyne-Stokes respirations, the pattern of breathing includes periods of apnea followed by a gradual increase and then decrease in the depth of respirations.

A. Massage the site after injection to promote absorption. B. Use cold insulin for injection to minimize site pain. C. Rotate the injection site to keep insulin levels consistent. D. Insulin is absorbed most rapidly when injected in the thigh.

Correct Answer is C

Explanation

Choice A rationale
Massaging the site after injection is not recommended. It can cause the insulin to be absorbed more quickly than intended, which could lead to hypoglycemia.
Choice B rationale
Using cold insulin for injection to minimize site pain is not accurate. Insulin should be at room temperature when injected. Cold insulin can make the injection more painful.
Choice C rationale
Rotating the injection site is important to prevent lipodystrophy, a condition that causes abnormal fat deposits at the injection site. It also helps to keep insulin levels consistent.
Choice D rationale
Insulin is not absorbed most rapidly when injected in the thigh. The abdomen is actually the site where insulin is absorbed most quickly.

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

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