Correct Answer: C

Rationale: Placing a pillow between the legs is essential post-total hip arthroplasty to prevent adduction of the hip joint, reducing the risk of dislocation.

Choices A, B, and D are incorrect. Using a walker while walking is encouraged for support and stability. Keeping the hip flexed at 90° while sitting can increase the risk of hip dislocation. Crossing legs at the ankles when sitting may also lead to hip dislocation.

Correct Answer: B

Rationale: When a client develops phlebitis at the IV site, the priority action for the nurse is to discontinue the IV and notify the provider. Phlebitis is inflammation of the vein, and removing the IV can help prevent further complications. Applying a warm compress may provide symptomatic relief but does not address the root cause. Monitoring for infection is important, but immediate action to remove the source of inflammation is crucial. Administering an anti-inflammatory medication is not the first-line intervention for phlebitis; removal of the IV is necessary.

Correct Answer: C

Rationale: The most appropriate position for a client post-lumbar puncture is the supine position. Placing the client in a supine position helps prevent spinal headaches by allowing the puncture site to seal effectively and reducing the risk of cerebrospinal fluid leakage. High Fowler's position, prone position, and sitting position are not recommended after a lumbar puncture as they may increase the risk of complications like spinal headaches.

Correct Answer: B

Rationale: Limiting the intake of phosphorus-rich foods is appropriate for a client with chronic kidney disease. In individuals with chronic kidney disease, the kidneys cannot filter phosphorus effectively, leading to a buildup in the blood. This can result in bone and heart problems.
Therefore, reducing phosphorus intake is crucial to prevent complications.

Choices A, C, and D are incorrect. Increasing potassium intake may be harmful as potassium levels can accumulate in the blood with impaired kidney function. Encouraging protein-rich foods may not be suitable as excessive protein intake can strain the kidneys. Advising to increase fluid intake should be done cautiously as individuals with chronic kidney disease may need to restrict fluids based on their stage of the disease.

Correct Answer: A

Rationale: The correct answer is to administer potassium-wasting diuretics. Hyperkalemia, which is high potassium levels, is managed by promoting the excretion of potassium from the body. Potassium-wasting diuretics help the kidneys eliminate excess potassium. Encouraging a low-potassium diet (choice
B) is important for long-term management but not the immediate intervention for hyperkalemia. Administering potassium supplements (choice
C) would worsen the condition by further increasing potassium levels. Administering IV fluids (choice
D) may help with hydration but does not directly address the high potassium levels characteristic of hyperkalemia.