Correct Answer: A

Rationale: In a client with pericarditis, the priority finding is a paradoxical pulse. This is a crucial sign of cardiac tamponade, a life-threatening complication of pericarditis where fluid accumulates in the pericardial sac, causing compression of the heart. A paradoxical pulse is an exaggerated decrease in systolic blood pressure (>10 mmHg) during inspiration. Prompt recognition and intervention are essential to prevent hemodynamic instability and cardiac arrest. Dependent edema (choice B) is not typically associated with pericarditis. Pericardial friction rub (choice C) is a common finding in pericarditis but does not indicate the urgency of intervention as a paradoxical pulse. Substernal chest pain (choice D) is a classic symptom of pericarditis but is not as critical as a paradoxical pulse in the context of assessing for complications.

Correct Answer: C

Rationale: When a patient is receiving IV potassium, it is crucial to monitor the IV site. Potassium can be irritating to the veins and may cause phlebitis or infiltration. Monitoring the IV site allows early detection of any potential complications. Checking urine output (Choice A) is important to assess kidney function but is not directly related to monitoring IV potassium. Blood pressure (Choice B) and respiratory rate (Choice D) are essential vital signs to monitor in general patient care but are not specific to monitoring IV potassium administration.

Correct Answer: A

Rationale: Limiting fluid intake is essential in managing patients with chronic kidney disease to prevent fluid overload, which can worsen kidney function. Increasing potassium intake is not recommended as patients with kidney disease often need to limit potassium. Providing a high-protein diet may put extra strain on the kidneys, so it is not ideal. Administering IV antibiotics is not a standard treatment for chronic kidney disease.

Correct Answer: D

Rationale: The correct instruction the nurse should include is to rotate injection sites within the same anatomical region. This practice helps reduce the risk of lipodystrophy, a condition characterized by fatty tissue changes due to repeated insulin injections in the same spot. By rotating sites, the client ensures better insulin absorption and prevents localized skin changes. Injecting air into the vial before withdrawing insulin (Choice A) is unnecessary and not recommended. Drawing up short-acting insulin before long-acting insulin (Choice B) is not a standard practice and can lead to errors in dosing. Storing unopened insulin vials in the freezer (Choice C) is incorrect as insulin should be stored in the refrigerator, not the freezer, to maintain its effectiveness.

Correct Answer: C

Rationale: Corrected Rationale: Redness and warmth are classic signs of inflammation, which are commonly seen in clients with deep vein thrombosis (DVT). These findings indicate increased blood flow and temperature in the affected area. Pain in the right lower extremity (Choice A) is not expected in a client with DVT affecting the left lower extremity. Cold skin (Choice B) is not a typical finding in DVT; instead, warmth is more indicative of inflammation. Shiny skin (Choice D) is not a common characteristic of DVT; rather, the skin may appear red, swollen, and warm due to the inflammatory process.