— 生理適應 · EASY · MCQ —
病人因心衰竭被處方使用 Digoxin，給藥前的優先評估為何？
A client with heart failure is prescribed Digoxin. What is the priority assessment before administration?
- ARespiratory rate呼吸頻率
- BPotassium level鉀離子濃度
- CApical heart rate✓ 正解心尖脈搏
- DBlood pressure血壓
— Explanation · 中文詳解 —
Digoxin 具有強心與負性變時（Negative chronotropic）作用，即減慢心率。若給藥前病人心跳過慢（小於 60 次/分），給藥可能導致嚴重的竇性心搏過緩（Sinus bradycardia）或心傳導阻滯。因此，給藥前必須聽診心尖脈（Apical pulse）整整一分鐘是護理師的強制性責任。
Digoxin exerts a negative chronotropic effect, slowing the heart rate; therefore, assessing the apical pulse for one minute is the critical priority before administration. If the heart rate is below 60 beats per minute, the medication should be withheld to prevent severe bradycardia or heart block, which are signs of toxicity.