A nurse is preparing to measure a client’s oxygen saturation and notes edema of the client’s hands and thickened toenails.
Where should the nurse apply the pulse oximeter probe?

Toe

Finger

Skin fold

Earlobe

Answer and Explanation

The Correct Answer is D

Choice A rationale
Applying the pulse oximeter probe to the toe might not provide an accurate reading if the client has poor peripheral circulation. Additionally, thickened toenails can interfere with the reading.
Choice B rationale

Edema in the hands can affect the accuracy of a pulse oximeter reading. The probe might not fit properly or provide a reliable reading if the finger is swollen.
Choice C rationale
Applying the pulse oximeter probe to a skin fold is not recommended. The probe needs to be placed on a relatively flat, thin area of skin to accurately measure oxygen saturation.
Choice D rationale
The earlobe is a suitable alternative site for pulse oximetry if the fingers and toes are not viable options. The earlobe is typically less affected by peripheral vasoconstriction, which can occur with hypothermia, certain medications, and certain diseases. Therefore, Choice D is the correct answer.

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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.

A. 28% B. 70% C. 509% D. 36% .

Correct Answer is A

Explanation

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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A nurse is preparing to measure a client’s oxygen saturation and notes edema of the client’s hands and thickened toenails. Where should the nurse apply the pulse oximeter probe?

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A nurse is preparing to measure a client’s oxygen saturation and notes edema of the client’s hands and thickened toenails.
Where should the nurse apply the pulse oximeter probe?