— 藥理與非經腸給藥 · EASY · MCQ —
下列哪項評估結果顯示護理師應暫停給予地高辛（Digoxin）？
Which assessment finding requires the nurse to hold the scheduled dose of Digoxin?
- ARespiratory rate of 16 breaths/min呼吸速率為每分鐘 16 次
- BBlood pressure of 110/70 mmHg血壓為 110/70 mmHg
- CSerum potassium level of 3.8 mEq/L血清鉀濃度為 3.8 mEq/L
- DApical heart rate of 54 beats/min✓ 正解心尖脈為每分鐘 54 下
— Explanation · 中文詳解 —
地高辛（Digoxin）是一種強心劑，具有負向變時性（Negative chronotropic effect），會減慢竇房結傳導並降低心跳速率。使用時需嚴格監測心跳，若成人心跳小於每分鐘 60 次，即存在心搏過緩風險，應暫停給藥並回報醫師。Digoxin 的治療窗狹窄，毒性反應風險高，心跳監測是給藥前的必要程序。
Digoxin slows conduction through the sinoatrial node and reduces heart rate, so it must be withheld if the adult apical pulse falls below 60 beats per minute to avoid dangerous bradycardia. This monitoring is essential because digoxin has a narrow therapeutic window and a high risk of toxicity.