Correct Answer: B

Rationale: An oxygen saturation of 88% indicates hypoxemia, which is a critical condition requiring immediate intervention to improve oxygenation. Hypoxemia can lead to tissue hypoxia and further complications. A productive cough with yellow sputum is common in pneumonia but may not require immediate intervention unless it worsens or is associated with other concerning symptoms. A respiratory rate of 20 breaths per minute is within the normal range, indicating adequate ventilation. A heart rate of 90 beats per minute is also within a normal range and may not require immediate intervention unless it is accompanied by other abnormal findings.

Correct Answer: D

Rationale: The correct answer is D: Potassium level. Furosemide is a loop diuretic that can cause potassium loss, leading to hypokalemia. Monitoring potassium levels is crucial to prevent complications such as cardiac arrhythmias. While calcium, sodium, and magnesium levels are important in various conditions and treatments, they are not the primary electrolyte affected by furosemide.

Correct Answer: A

Rationale: The correct answer is A: A 79-year-old malnourished client on bed rest. This client is at the highest risk for developing decubitus ulcers due to being malnourished and on bed rest, leading to decreased mobility and poor nutrition. This combination puts the client at significant risk for skin breakdown and pressure ulcers. Choice B is incorrect because although obesity is a risk factor for developing pressure ulcers, immobility and poor nutrition are higher risk factors. Choice C is incorrect as incontinence can contribute to skin breakdown but is not as high a risk factor as immobility and poor nutrition. Choice D is incorrect as an ambulatory client, even if diabetic, has better mobility than a bedridden client and is at lower risk for developing decubitus ulcers.

Correct Answer: B

Rationale: The correct answer is B: Prepare the client for dialysis. Clients with acute kidney injury and elevated creatinine may require dialysis to support kidney function and remove waste products from the blood. Preparing for dialysis ensures timely intervention in preventing further complications. Administering diuretics (Choice A) may worsen the client's condition by further compromising kidney function. Restricting fluid intake (Choice C) may be necessary in some cases, but it is not the priority over preparing for dialysis. Notifying the healthcare provider (Choice D) is important, but the immediate priority is to prepare for dialysis to address the acute kidney injury and elevated creatinine level.

Correct Answer: B

Rationale: The correct answer is B. The client has a legal right to be informed about their treatment, including medication uses and side effects, as part of informed consent. This helps ensure that the client can make an informed decision about their care. Choice A is incorrect because the nurse can provide the client with information about their medications. Choice C is incorrect as it is not an independent decision of the nurse but a professional responsibility to educate clients. Choice D is incorrect as knowledge about medication side effects can actually empower clients to manage their condition effectively.