A nurse is teaching a newly licensed nurse about a nonrebreather oxygen mask. Which of the following instructions should the nurse include?

Use a nonrebreather mask to deliver low-flow oxygen

A nonrebreather mask should fit snugly over a client's face.

The reservoir bag on a nonrebreather mask should collapse with

A nonrebreather mask dries a client's mucous membranes

Answer and Explanation

The Correct Answer is B

A.   A nonrebreather mask is used to deliver high-flow oxygen, not low-flow. It provides the highest concentration of oxygen compared to other types of masks, which is crucial for patients with severe hypoxemia. The high-flow oxygen helps in achieving a higher concentration of oxygen in the blood.
B.   It is essential that a nonrebreather mask fits snugly over the client's face to ensure that the patient receives the maximum amount of oxygen and to prevent room air from mixing with the oxygen being delivered. A proper seal is necessary to achieve the desired level of oxygenation and to avoid oxygen leakage.
C.   The reservoir bag on a nonrebreather mask should not collapse with each breath. Ideally, the bag should remain partially inflated even during inspiration. If the bag collapses completely, it indicates that the patient is not receiving enough oxygen, and the mask may not be functioning correctly.
D.   A nonrebreather mask itself does not cause drying of the mucous membranes. However, high-flow oxygen can sometimes lead to dryness of the mucous membranes if not managed properly. Humidification may be required to prevent dryness, but this is not a direct effect of the mask itself.

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Correct Answer is C

Explanation

A. Changing the patient's head position during suctioning can increase discomfort and hypoxia.
B. This is premature. The tachycardia may be a temporary response to the suctioning procedure.
C. The increased heart rate is likely a response to the stimulation of suctioning. Stopping the procedure allows the patient to recover and reassessment can determine if further suctioning is necessary.
D. This is excessive and not necessary at this time.

A. Higher risk of respiratory complications due to decreased lung function B. Increased risk of cardiovascular events due to strain on the heart C. Increased risk of infection due to impaired wound healing D. Decreased risk of blood clots due to improved circulation

Correct Answer is D

Explanation

A. Obese patients often have decreased lung function due to reduced chest wall compliance and increased abdominal pressure, which can impair respiratory mechanics. This leads to a higher risk of respiratory complications such as hypoventilation, atelectasis, and pneumonia post-surgery.

B. Obesity places additional strain on the cardiovascular system, increasing the risk of cardiovascular events like hypertension, heart attack, and stroke. This strain is compounded during surgery due to increased cardiac workload and potential fluid shifts.
C. Obesity impairs wound healing due to several factors, including decreased oxygenation to tissues, impaired immune function, and increased adipose tissue which can create a moist environment conducive to infection. This increases the risk of postoperative infections.
D. In fact, obesity is associated with an increased risk of blood clots (venous thromboembolism) due to reduced mobility, chronic inflammation, and altered coagulation factors. Obesity does not improve circulation; rather, it often exacerbates venous stasis and clot formation.

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A nurse is teaching a newly licensed nurse about a nonrebreather oxygen mask. Which of the following instructions should the nurse include?

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Naxlex Comprehensive Predictor Exams

A nurse is suctioning the endotracheal tube of a client who is on a ventilator. The client's heart rate increases from 86/min to 110/min and becomes irregular. Which of the following actions should the nurse take?

Correct Answer is C

Explanation

Which of the following factors is NOT associated with a higher risk of post-surgical complications in obese patients?

Correct Answer is D

Explanation

A nurse is preparing to administer hydrocortisone 100 mg IM daily to a client. Available is hydrocortisone 250 mg/2 mL. How many mL should the nurse administer per dose? (Round the answer to the nearest tenth number. Use a leading zero if it applies. Do not use a trailing zero.)

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