Nursing Elites

1. A client is having blood tests and has an elevated lymphocyte level. Based on knowledge of cellular components, what does the nurse know about these cells?

• A. Contain histamine and provide protection during allergic reactions
• B. Are involved in phagocytosis
• C. Provide protection and immunity against foreign substances
• D. Carry hemoglobin and oxygen to body tissues

Correct answer: C

Rationale: Lymphocytes are a type of white blood cells that play a crucial role in supporting the body's immune system. They are responsible for producing substances that protect the body against infections and foreign substances that could potentially harm the client. Lymphocytes consist of two main types: T cells, which are produced in the thymus, and B cells, which are produced in the lymphatic tissue. Choice A is incorrect because histamine is mainly associated with basophils and mast cells, not lymphocytes. Choice B is incorrect as phagocytosis is a function of other white blood cells such as neutrophils and macrophages. Choice D is also incorrect as carrying hemoglobin and oxygen is a function of red blood cells, not lymphocytes.

2. A client must use a non-rebreathing oxygen mask. Which of the following statements is true regarding this type of mask?

• A. A non-rebreather can provide an FiO2 of 40%.
• B. A client should breathe through his or her mouth when using a non-rebreather.
• C. A non-rebreather offers a reservoir from which the client inhales.
• D. The mask of a non-rebreather should be changed every 3 hours.

Correct answer: A

Rationale: A non-rebreather mask is used for supplemental oxygen delivery for clients experiencing breathing difficulties. The non-rebreather mask includes a one-way valve that allows exhaled air to escape, preventing the rebreathing of carbon dioxide. The client inhales oxygenated air from a reservoir bag attached to the mask, providing high-concentration oxygen therapy. A non-rebreather mask can deliver FiO2 levels of up to 90%, making it an effective intervention for clients requiring high oxygen concentrations. Therefore, the statement that 'A non-rebreather can provide an FiO2 of 40%' is correct. Choices B, C, and D are incorrect because clients should breathe through their nose and mouth, the mask offers a reservoir for inhaling oxygen, and the mask should be assessed and potentially replaced if soiled or damaged, not routinely changed every 3 hours.

3. A client is admitted to a nursing unit with a remittent fever. Which statement best describes this pattern of fever?

• A. A fever that spikes and then lowers without returning to normal
• B. A fever that lasts 2 days followed by normal temperature for 2 days, followed by fever again
• C. A fever that lasts 2 days followed by normal temperature for 12 hours, followed by fever again
• D. A persistent fever that has lasted over 24 hours

Correct answer: A

Rationale: A remittent fever is characterized by temperature fluctuations where the fever spikes and then lowers but does not return to normal temperature. Option A best describes this pattern of fever. Option B describes a pattern of fever known as a biphasic fever, where the fever alternates between days of fever and normal temperature. Option C describes a pattern of fever that is more indicative of an intermittent fever, where the fever lasts for a specific duration followed by an interval of normal temperature. Option D does not accurately describe a remittent fever, as it suggests a persistent fever that has lasted over 24 hours, which is not specific to the remittent pattern.

4. Which example best describes a nurse who exhibits moral courage?

• A. A nurse feels angry when a parent refuses important treatment for his child.
• B. A nurse considers seeking help for depression when she feels she cannot meet the needs of her clients in the oncology unit.
• C. A nurse contacts a physician for further orders when he fails to order comfort measures for a client with a terminal illness.
• D. A nurse is frustrated when the laboratory is slow in responding to an order for a stat blood glucose.

Correct answer: C

Rationale: Moral courage involves taking action to do what is right, even when there might be negative consequences. The nurse who contacted a physician for further orders acted as a client advocate to seek help, even though she may have faced consequences such as lost time, decreased productivity, or criticism from the physician. Choices A, B, and D do not directly involve advocating for a client's needs or challenging a situation that goes against ethical standards. Feeling angry, seeking help for personal issues, or being frustrated with work processes do not necessarily demonstrate moral courage in the context of nursing practice.

5. Which of the following components is associated with hypertonic dehydration?

• A. Plasma sodium levels above 150 mEq/L
• B. Fluid moves from extracellular space to intracellular space
• C. Water loss is greater than electrolyte loss
• D. Physical signs and symptoms are grossly apparent

Correct answer: C

Rationale: The correct answer is 'Water loss is greater than electrolyte loss.' In hypertonic dehydration, there is a higher loss of water compared to electrolytes, leading to elevated concentrations of electrolytes in the body. This condition is characterized by plasma sodium levels above 150 mEq/L. As water moves from the extracellular space to the intracellular space, it results in cellular dehydration. Choice A is incorrect because the plasma sodium levels associated with hypertonic dehydration are typically above 150 mEq/L, not between 130 and 150 mEq/L. Choice B is incorrect as fluid moves from the extracellular space to the intracellular space in hypertonic dehydration. Choice D is incorrect because physical signs and symptoms may not always be grossly apparent in hypertonic dehydration.

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