護理師準備為病人靜脈輸注氯化鉀（KCl）。下列哪項護理措施為最高優先事項？
A nurse is preparing to administer potassium chloride intravenous piggyback to a client. Which nursing action is the highest priority?
- AObtain a baseline EKG recording取得基礎心電圖（EKG）記錄
- BCheck for the presence of a central venous catheter檢查是否存在中心靜脈導管
- CAssess the client's current urine output✓ 正解評估病人目前的尿量
- DVerify the concentration and infusion rate確認濃度與輸注速率
在靜脈給予氯化鉀（KCl）前，護理師的「最高優先事項」是評估腎功能。鉀離子主要透過腎臟排泄，若病人尿量不足（<30 mL/hr），代表腎功能可能受損，此時給予靜脈鉀離子將導致嚴重的高血鉀（Hyperkalemia），進而引發致命的心律不整。其他選項雖是給藥注意事項，但必須建立在腎功能正常的前提之下。
Before intravenous administration of potassium chloride (KCl), the nurse's highest priority is to assess renal function. Potassium is excreted primarily by the kidneys; if urine output is inadequate (<30 mL/hr), renal function may be impaired, and intravenous potassium administration will lead to severe hyperkalemia and potentially fatal dysrhythmias. The other options are important considerations but must be addressed only on the premise of adequate renal function.