— 藥理與非經腸給藥 · HARD · MCQ —
護理師準備為低血鉀病人靜脈注射氯化鉀。給藥前，優先確認下列哪項評估指標？
A nurse is preparing to administer intravenous potassium chloride to a client with hypokalemia. Which assessment finding is the priority for the nurse to verify before initiation?
- ASerum magnesium level血清鎂濃度
- BUrine output✓ 正解尿量
- CPeripheral IV site integrity周邊靜脈注射點完整性
- DBlood pressure血壓
— Explanation · 中文詳解 —
靜脈給予氯化鉀（KCl）具有高度風險，因為鉀離子主要透過腎臟排泄。若病人腎功能受損，給藥將導致高血鉀（Hyperkalemia），進而引發致命的心律不整。因此，給藥前必須確認腎臟功能，最直接的指標就是尿量（Urine output），通常要求至少 >30 mL/hr。若尿量不足，必須暫停給藥並回報醫師。
Adequate urine output is the priority assessment because the kidneys are responsible for excreting excess potassium. Ensuring sufficient renal function prevents hyperkalemia, which can lead to life-threatening cardiac arrhythmias during intravenous potassium administration.