護理師照顧一位高血鉀病人，哪項行動最優先？
A nurse is caring for a client with hyperkalemia. Which action is the priority?
- APerform an ECG進行心電圖檢查
- BAdminister potassium-sparing diuretics給予保鉀利尿劑
- CPlace the client on a cardiac monitor✓ 正解將病人安置於心臟監測儀上
- DEncourage the client to drink orange juice鼓勵病人飲用柳橙汁
高血鉀（Hyperkalemia）最危險的臨床表現是致命性心律不整，如心室顫動或心搏停止。在NCLEX考試中，針對潛在威脅生命的情況，優先級排序應遵循ABC原則（Airway, Breathing, Circulation）。連接心臟監測器能即時偵測心電圖變化，這對於高血鉀病人是維護循環穩定性的首要護理行動。ECG診斷固然重要，但持續性監測（Cardiac monitoring）能提供動態數據，讓護理師在心律改變的第一時間介入搶救，確保病人安全。
The most dangerous clinical manifestations of hyperkalemia are life-threatening dysrhythmias such as ventricular fibrillation or cardiac arrest. On the NCLEX, when a condition is potentially life-threatening, priorities follow the ABC principle (Airway, Breathing, Circulation). Connecting the client to a cardiac monitor allows immediate detection of ECG changes, making this the priority nursing action for maintaining circulatory stability in hyperkalemia. Although an ECG is diagnostically important, continuous cardiac monitoring provides dynamic data and enables the nurse to intervene at the first sign of rhythm change, ensuring patient safety.