護理師準備為病人靜脈輸注氯化鉀，下列哪項行動最能確保病人安全？
A nurse is preparing to administer potassium chloride intravenously to a client. Which action is most important to ensure client safety?
- AVerify the patient's blood pressure is stable確認病人的血壓穩定
- BAdminister the dose as an IV push bolus以靜脈推注方式給予劑量
- CCheck the client's urine output before infusion✓ 正解在輸注前檢查病人的尿液排出量
- DFlush the IV site with dextrose 5% in water before starting在開始前以5%葡萄糖水沖洗靜脈通路
鉀離子主要經由腎臟排泄，給予鉀離子前，必須確認病人的腎功能正常且有足夠的尿量。若病人腎功能受損導致少尿，補充鉀離子將引發高血鉀，導致致命性心律不整。氯化鉀嚴禁靜脈直接推注（IV Push），必須稀釋並緩慢輸注。其他選項如監測血壓（A）或沖洗管路（D）雖為常規照護，但確認腎功能與尿量是安全性最關鍵的決定因素。
Potassium is primarily excreted by the kidneys, so verifying adequate urine output is critical before administration to prevent hyperkalemia, which can lead to fatal cardiac arrhythmias. Intravenous potassium must never be given as a direct push due to the risk of cardiac arrest; it requires dilution and controlled infusion. While blood pressure monitoring is part of general care, renal function and urine output are the specific determinants for safe potassium administration.