— 藥理與非經腸給藥 · MEDIUM · MCQ —
護理師準備給予心衰竭病人利尿劑（Furosemide），下列哪項檢驗數值最需要優先關注？
A nurse is preparing to administer furosemide to a patient with heart failure. Which laboratory value requires the most immediate follow-up?
- ASerum sodium 138 mEq/L血清鈉 138 mEq/L
- BSerum potassium 2.9 mEq/L✓ 正解血清鉀 2.9 mEq/L
- CSerum creatinine 1.0 mg/dL血清肌酸酐 1.0 mg/dL
- DBlood urea nitrogen 20 mg/dL血中尿素氮 20 mg/dL
— Explanation · 中文詳解 —
Furosemide 為環利尿劑，會導致鉀離子大量排出。低血鉀（<3.5 mEq/L）會增加毛地黃中毒風險並誘發致命性心律不整。給藥前若發現鉀過低，務必暫停給藥並聯繫醫師補充鉀離子。其餘數值均在正常範圍內。
Furosemide is a loop diuretic that causes significant potassium loss. Hypokalemia (<3.5 mEq/L) increases the risk of digoxin toxicity and life-threatening dysrhythmias. The medication should be held and the provider notified to replace potassium before administration. The other values are within normal limits.
✦ 台美臨床差異
在兩地臨床上，護理師發現低血鉀均有權力暫停給藥並通報醫師，符合安全用藥規範。