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降低風險 · MEDIUM · MCQ

護理師準備對一位有深部靜脈栓塞(DVT)病史的病人給予華法林(Warfarin)。給藥前應檢查哪項實驗數據?

A nurse is preparing to administer warfarin to a client with a history of DVT. Which laboratory result should the nurse review before administering the dose?

  • APartial Thromboplastin Time (PTT)
    部分凝血活酶時間(PTT)
  • BPlatelet count
    血小板計數
  • CHemoglobin level
    血紅素濃度
  • DInternational Normalized Ratio (INR)✓ 正解
    國際標準比值(INR)
Explanation · 中文詳解

華法林(Warfarin)的作用為拮抗維生素 K,臨床上透過監測凝血酶原時間的標準化數值(INR)來評估抗凝血強度。PTT 是用來監測肝素(Heparin)的,血小板則是監測肝素誘發血小板低下(HIT),血紅素則與貧血相關,皆非華法林的首選監測指標。

Warfarin therapy is monitored using the International Normalized Ratio (INR), which standardizes prothrombin time to assess anticoagulation efficacy. Unlike PTT, which monitors heparin, INR is the specific indicator for determining safe warfarin dosing.

✦ 台美臨床差異

台灣臨床多以 Prothrombin Time (PT) 秒數與 INR 同時併呈,美國多以 INR 為核心數據。

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