— 生理適應 · MEDIUM · MCQ —
護理師照護一位有心房顫動和近期中風病史的病人。病人被處方warfarin。護理師最需監測哪項實驗室數值？
A nurse is caring for a client with a history of atrial fibrillation and a recent stroke. The client is prescribed warfarin. Which laboratory value is most important for the nurse to monitor?
- AInternational Normalized Ratio (INR)✓ 正解國際標準化比值（INR）
- BActivated partial thromboplastin time (aPTT)活化部分凝血活酶時間（aPTT）
- CProthrombin time (PT)凝血酶原時間（PT）
- DPlatelet count血小板計數
— Explanation · 中文詳解 —
warfarin 是一種口服抗凝血劑，其療效和安全性需透過監測 INR 來評估。INR 值反映了 PT 相對於正常值（1.0）的延長倍數，是調整 warfarin 劑量的關鍵依據。aPTT 主要用於監測肝素。
The International Normalized Ratio (INR) is the standardized laboratory value used to monitor the therapeutic effect and safety of warfarin therapy. While prothrombin time (PT) is related, INR provides a consistent measure across different laboratories to guide dosage adjustments. Activated partial thromboplastin time (aPTT) is used to monitor heparin, not warfarin.
✦ 台美臨床差異
美國對 warfarin 病人有詳盡的 INR 監測指南；台灣則依賴定期門診抽血，病人居家自行監測的普及度不高。