Correct Answer: A

Rationale: The correct answer is A: Monitor for signs of infection and administer pain relief. In postoperative care for a patient with a hip replacement, it is crucial for the nurse to monitor for signs of infection, such as increased pain, redness, swelling, or drainage from the surgical site. Administering pain relief is also important to ensure the patient's comfort and aid in their recovery. Choices B, C, and D are incorrect as they do not directly relate to the immediate postoperative care needs of a patient with a hip replacement. Ensuring a low-calcium diet, using crutches, or monitoring for deep vein thrombosis are not primary responsibilities in the immediate postoperative period for this type of surgery.

Correct Answer: A

Rationale: The correct answer is A: Monitor for signs of infection and administer pain relief. In postoperative care for a patient with a hip replacement, it is crucial for the nurse to monitor for signs of infection, such as increased pain, redness, swelling, or drainage from the surgical site. Administering pain relief is also important to ensure the patient's comfort and aid in their recovery. Choices B, C, and D are incorrect as they do not directly relate to the immediate postoperative care needs of a patient with a hip replacement. Ensuring a low-calcium diet, using crutches, or monitoring for deep vein thrombosis are not primary responsibilities in the immediate postoperative period for this type of surgery.

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: 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: D

Rationale: The correct answer is D because having family members wear a gown and gloves when visiting clients with C. difficile is crucial to prevent the transmission of the infection. Options A, B, and C are incorrect because assigning the client to a room with a negative air-flow system, using alcohol-based hand sanitizer, and cleaning contaminated surfaces with a phenol solution are not specific measures for preventing the spread of C. difficile.