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 B

Explanation

A. Abdominal pain is not a direct manifestation of respiratory acidosis. However, it may be associated with other conditions or complications but is not a primary indicator of respiratory acidosis.
B. Lethargy or drowsiness is a common symptom of respiratory acidosis. The increased CO₂ levels lead to an acidic environment that can affect brain function, resulting in decreased alertness, confusion, or drowsiness.
C. Numbness or tingling of the fingers is more commonly associated with respiratory alkalosis, which is characterized by a decreased level of CO₂ and increased blood pH. This condition can cause peripheral numbness and tingling due to altered blood pH affecting nerve function.
D. Dry skin is not a direct manifestation of respiratory acidosis. While it might be a sign of dehydration or other systemic issues, it is not specifically linked to respiratory acidosis.

A. Heart murmur B. Crackles in lungs C. Chest pain D. Peripheral edema

Correct Answer is D

Explanation

A. Murmurs are usually related to valve dysfunctions, such as tricuspid or pulmonic valve issues, which may or may not be present in right-sided heart failure.
B. Crackles (or rales) are more commonly associated with left-sided heart failure. They result from fluid accumulation in the lungs (pulmonary congestion) due to the heart's inability to handle the blood returning from the lungs.

C. Chest pain can occur in various cardiac conditions but is not a hallmark symptom of right-sided heart failure. It might be present if there are underlying coronary artery disease issues or other conditions, but it is not directly indicative of right-sided heart failure.
D. Peripheral edema is a classic finding in right-sided heart failure. It results from fluid accumulation in the lower extremities due to the heart's inability to effectively pump blood to the lungs and systemic circulation, causing increased venous pressure and fluid leakage into the tissues.

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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 assessing a client who has respiratory acidosis. Which of the following findings should the nurse expect?

Correct Answer is B

Explanation

A nurse is assessing a client who has right-sided heart failure. Which of the following findings should the nurse expect?

Correct Answer is D

Explanation

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