— 藥理與非經腸給藥 · EASY · MCQ —
一名因心房顫動服用口服華法林（Warfarin）的病人。護理師應指導病人飲食中應維持哪種食物攝取量的一致性？
A client is prescribed oral warfarin for atrial fibrillation. Which food choice should the nurse instruct the client to maintain consistently in their diet?
- ARed meat紅肉
- BWhole grain bread全麥麵包
- CDairy products乳製品
- DSpinach✓ 正解菠菜
— Explanation · 中文詳解 —
華法林（Warfarin）是一種口服抗凝血劑，常用於預防和治療血栓栓塞性疾病，如心房顫動引起的血栓。其作用機轉是透過拮抗維生素 K 的作用，抑制肝臟合成維生素 K 依賴性凝血因子（II, VII, IX, X）。因此，飲食中維生素 K 的攝取量會直接影響華法林的藥效。護理師在衛教病人時，強調維持飲食中維生素 K 攝取量的一致性至關重要，而非完全避免，以確保藥物療效穩定並降低出血或血栓風險。
Warfarin acts as a vitamin K antagonist, so consistent intake of vitamin K-rich foods like spinach is essential to maintain stable INR levels and prevent fluctuations in anticoagulation. Patients should not avoid these foods entirely but must keep their consumption consistent to ensure predictable drug efficacy and safety.