— 降低風險 · MEDIUM · MCQ —
護理師準備靜脈輸注氯化鉀。給藥前必須先確認哪一項評估指標？
A nurse is preparing to administer intravenous potassium chloride. Which assessment must be verified prior to initiation?
- ACapillary refill time微血管回充時間
- BUrine output✓ 正解尿量
- CRespiratory rate呼吸速率
- DBlood pressure血壓
— Explanation · 中文詳解 —
鉀離子（Potassium）主要經由腎臟排泄。靜脈輸注鉀離子前，護理師必須確認病人是否有足夠的腎功能來代謝鉀離子，以防發生高血鉀症（Hyperkalemia），進而引發致命的心室顫動（Ventricular Fibrillation）。臨床上，確認尿量（Urine Output）至少 > 30 mL/hr 是確保腎功能正常的關鍵指標。
Adequate urine output is essential before administering intravenous potassium because the kidneys are responsible for excreting excess potassium. Verifying sufficient renal function prevents hyperkalemia, which can lead to fatal cardiac arrhythmias such as ventricular fibrillation.