Correct Answer: A

Rationale: Applying a cold pack to the surgical site for the first 24 hours reduces swelling and pain, promoting comfort and recovery after total knee arthroplasty.
Choice B is incorrect because keeping the affected leg in a dependent position increases swelling; the leg should be elevated to reduce edema.
Choice C is incorrect because active range-of-motion exercises are typically started later (e.g., day 2 or 3), with passive or assisted exercises on day 1 to avoid strain.
Choice D is incorrect because heparin is usually given subcutaneously (e.g., enoxaparin) for DVT prophylaxis, not IV, and the duration depends on the provider's protocol, not automatically 7 days.

Correct Answer: A

Rationale: Morning stiffness lasting more than 30 minutes is a hallmark symptom of rheumatoid arthritis, caused by joint inflammation and synovial fluid accumulation overnight.
Choice B is incorrect because rheumatoid arthritis typically causes symmetrical joint pain, not unilateral pain, which is more common in osteoarthritis or injury.
Choice C is incorrect because a fever of 38.5°C is not typical unless there is an infection or systemic complication, not a primary feature of rheumatoid arthritis.
Choice D is incorrect because bradycardia is not associated with rheumatoid arthritis; tachycardia may occur with inflammation or pain.

Correct Answer: A

Rationale: Encouraging the client to ambulate within 4 hours after a cholecystectomy promotes circulation, prevents complications like deep vein thrombosis, and aids in recovery of bowel function.
Choice B is incorrect because morphine should be administered as needed (PRN) for pain, not on a fixed every-6-hour schedule, to avoid overmedication.
Choice C is incorrect because a supine position with legs elevated is not necessary and may be uncomfortable; a semi-Fowler's position is preferred to reduce abdominal strain.
Choice D is incorrect because a high-fat meal should be avoided post-cholecystectomy, as it can cause discomfort or diarrhea due to altered bile metabolism; a low-fat diet is recommended initially.

Correct Answer: A

Rationale: An uncontrollable urge to move the legs is a hallmark symptom of restless legs syndrome, often accompanied by uncomfortable sensations relieved by movement.
Choice B is incorrect because joint swelling is not associated with restless legs syndrome; it is more typical of arthritis.
Choice C is incorrect because fever is not a feature unless an infection or other condition is present.
Choice D is incorrect because weight gain is not a primary symptom; weight changes may occur secondary to medication or lifestyle.

Correct Answer: A

Rationale: Reporting drowsiness is important with gabapentin due to sedation. Antacids reduce absorption, weight gain is more common, and stopping abruptly risks withdrawal.