— 藥理與非經腸給藥 · MEDIUM · MCQ —
一位正在服用華法林（Warfarin）的病人，護理師應指導其維持哪類食物的攝取穩定？
A client is taking warfarin. The nurse should instruct the client to maintain a consistent intake of which food group?
- AHigh-protein red meat高蛋白紅肉
- BVitamin K-rich green leafy vegetables✓ 正解富含維生素K的深綠色葉菜
- CGrapefruit juice葡萄柚汁
- DDairy products乳製品
— Explanation · 中文詳解 —
華法林（Warfarin）是一種維生素 K 拮抗劑（Vitamin K Antagonist），透過抑制肝臟合成依賴維生素 K 的凝血因子來達到抗凝血效果。維生素 K 的攝取量會直接影響藥物的抗凝血強度（INR 值）。護理教導的重點不在於禁止攝取，而在於維持維生素 K 攝取量的「穩定性」，讓醫師能根據穩定的飲食習慣調整華法林的劑量。
Warfarin is a vitamin K antagonist that inhibits the synthesis of vitamin K-dependent clotting factors in the liver. Vitamin K intake directly affects the drug's anticoagulant effect (INR). The teaching point is not to avoid vitamin K-containing foods, but to maintain a consistent intake so the provider can titrate warfarin dosing against a stable diet.