— 降低風險 · MEDIUM · MCQ —
護理師準備給予病人 Warfarin，給藥前應檢視哪項實驗室數據？
A nurse is preparing to administer warfarin to a client. Which laboratory value should the nurse review before administration?
- AHgb/HctHgb/Hct（血紅素／血比容）
- BaPTTaPTT
- CPT/INR✓ 正解PT/INR
- DPlatelet count血小板計數
— Explanation · 中文詳解 —
Warfarin（Coumadin）的作用機制為抑制維生素 K 依賴性凝血因子。臨床上監測其療效的核心指標是凝血酶原時間（PT）及其衍生的標準化比值（INR）。aPTT 則是用於監測肝素（Heparin）的指標。血小板和血紅素雖重要，但非 Warfarin 劑量調整的直接依據。
The nurse must review the Prothrombin Time (PT) and International Normalized Ratio (INR) before administering warfarin, as these values monitor the drug's anticoagulant effect. Unlike aPTT, which is used for heparin, INR is the standard measure for adjusting warfarin dosage to ensure therapeutic efficacy and safety.
✦ 台美臨床差異
台美兩地對口服抗凝血藥的監測均仰賴 INR，護理師需具備根據醫院 protocol 核對 INR 後給藥的決策能力。