— 藥理與非經腸給藥 · EASY · MCQ —
護理師準備對心衰竭病人給予 0.25 mg 地高辛。給藥前，哪項評估結果最重要？
A nurse is administering digoxin 0.25 mg orally to a client with heart failure. Before administration, which assessment finding is most important for the nurse to verify?
- AApical pulse rate✓ 正解心尖脈搏速率
- BRespiratory rate呼吸速率
- CBlood pressure血壓
- DPotassium level鉀離子濃度
— Explanation · 中文詳解 —
地高辛（Digoxin）具有正性肌力作用與負性變時作用（減慢心跳）。給藥前最關鍵的步驟是評估心跳速率，若成人心尖脈（Apical pulse）小於 60 bpm，可能導致嚴重的心動過緩（Bradycardia）甚至心跳停止，必須暫停給藥並通知醫師。雖然血鉀異常會導致地高辛中毒，但心尖脈是每次給藥前必須執行的立即性安全檢查。
Digoxin slows the heart rate, so checking the apical pulse for one full minute is critical to prevent bradycardia. If the pulse is below 60 beats per minute, the nurse should withhold the medication and notify the provider.