Correct Answer: A

Rationale: The correct answer is to administer calcium gluconate. In hyperkalemia, the priority is to protect the heart from potential complications like arrhythmias. Calcium gluconate is the first-line treatment as it stabilizes the cardiac cell membrane. Insulin (Choice B) and sodium bicarbonate (Choice C) can be used in conjunction with other treatments to shift potassium into cells, but calcium gluconate is the priority. Administering a diuretic (Choice D) is not the primary intervention for hyperkalemia and can even worsen the condition by reducing potassium excretion.

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: Facial flushing is a common symptom of early dumping syndrome, which occurs when food moves too quickly into the small intestine. This rapid movement triggers the release of vasoactive peptides causing vasodilation, leading to facial flushing. Syncope (choice B) is not a typical finding in early dumping syndrome. Diaphoresis (choice C) and bradycardia (choice D) are also not characteristic symptoms of early dumping syndrome.

Correct Answer: A

Rationale: Healthcare professionals should perform hand hygiene before and after patient contact to prevent the spread of infections. While choices B, C, and D are also important times to practice hand hygiene, they are not as crucial as before and after patient contact because patient contact poses a higher risk of transmitting infections.