— 降低風險 · MEDIUM · MCQ —
一位病人服用 Warfarin。下列哪項飲食指導對預防藥物-食物交互作用最重要？
A client is prescribed Warfarin. Which dietary instruction is essential to prevent a drug-food interaction?
- ATake the medication with high-protein meals隨高蛋白餐點服用藥物
- BMaintain a consistent daily intake of Vitamin K✓ 正解維持每日維生素K攝取量一致
- CAvoid all green leafy vegetables避免所有深綠色葉菜
- DIncrease intake of antioxidants增加抗氧化劑攝取
— Explanation · 中文詳解 —
Warfarin（抗凝血劑）的作用機轉是拮抗維生素 K。維生素 K 是肝臟合成凝血因子的重要原料。若飲食中維生素 K（常見於深綠色蔬菜）攝取量忽高忽低，會嚴重影響 Warfarin 的抗凝血穩定性，導致凝血功能監測值（INR）波動。正確做法是保持每日維生素 K 攝取量恆定，讓醫師根據該飲食習慣調整藥物劑量。
Clients taking warfarin must maintain a consistent daily intake of vitamin K, as this nutrient antagonizes the drug's anticoagulant effects. Fluctuations in vitamin K consumption can cause unstable INR levels, so complete avoidance is unnecessary but consistency is critical.