Correct Answer: D

Rationale: The correct answer is D because a client with pneumonia and a new onset of confusion needs immediate evaluation for changes in neurological status. This could indicate a decline in respiratory status or potential complications such as hypoxia or sepsis. Option A, a client who is NPO and has dry mucous membranes, may need intervention but does not indicate an acute change in condition. Option B, a client with rotavirus who has been vomiting, requires assessment and intervention but does not pose an immediate threat to life. Option C, a client with a urinary catheter and cloudy urine, may indicate a urinary tract infection but does not require immediate attention compared to the client with new onset confusion and pneumonia.

Correct Answer: A

Rationale: Filgrastim works by stimulating the production of white blood cells. Therefore, monitoring the white blood cell (WBC) count is essential to assess the effectiveness of the treatment. Choice B, serum potassium, is not directly affected by filgrastim therapy. Choice C, hemoglobin level, is important but not the primary indicator of filgrastim's effectiveness. Choice D, serum creatinine, is unrelated to the action of filgrastim and would not reflect its effectiveness.

Correct Answer: D

Rationale: The LPN should question the assignment of replacing the PCA pump cartridge and tubing as it is outside the LPN's scope of practice. LPNs are not trained to handle tasks related to PCA pumps, which involve medication administration and monitoring that are typically within the RN's responsibilities. Assisting a postop client with an incentive spirometer (Choice A), collecting a clean catch urine specimen (Choice B), and providing nasopharyngeal suctioning for a client with pneumonia (Choice C) are all tasks that fall within the LPN's scope of practice and do not require questioning by the LPN.

Correct Answer: A

Rationale: For a patient with diarrhea, the priority is to manage dehydration by providing oral fluids and monitoring stool consistency. Option B suggesting administering antidiarrheal medications is not recommended as it may prolong the infection by preventing the body from expelling the infectious agent. Option C is incorrect because antibiotics are not routinely indicated for diarrhea unless there is a specific bacterial infection. Option D is not the most appropriate initial intervention for managing diarrhea since a low-fiber diet may not provide adequate nutrition for the patient or help resolve the underlying cause of diarrhea.

Correct Answer: A

Rationale: The correct answer is A: Monitor electrolyte levels and administer potassium as needed. Patients on diuretic therapy are at risk of electrolyte imbalances, particularly low potassium levels. Monitoring electrolytes and administering potassium as needed are crucial nursing interventions to prevent imbalances. Choice B is incorrect because restricting fluid intake and providing a low-sodium diet are not typically indicated for patients on diuretic therapy. Choice C is incorrect as encouraging oral fluids and increasing dietary potassium can exacerbate electrolyte imbalances in patients on diuretics. Choice D is incorrect as providing high-sodium foods would worsen electrolyte balance issues in patients on diuretic therapy.