— 藥理與非經腸給藥 · EASY · MCQ —
一位病人因心房顫動被處方warfarin。護理師應指導病人限制哪種富含維生素 K 的食物？
A client is prescribed warfarin for atrial fibrillation. Which food should the nurse instruct the client to limit due to its high vitamin K content?
- AApple蘋果
- BSpinach✓ 正解菠菜
- COrange juice柳橙汁
- DBanana香蕉
— Explanation · 中文詳解 —
維生素 K 會拮抗 warfarin 的作用，降低其抗凝血效果。深綠色葉菜類，如菠菜、羽衣甘藍、西蘭花等，富含維生素 K。病人應維持穩定的維生素 K 攝取量，而非完全避免，以利 INR 穩定在治療範圍。
Vitamin K antagonizes the effects of warfarin, potentially reducing its anticoagulant efficacy and increasing the risk of clotting. Spinach is rich in vitamin K, so clients should be instructed to limit their intake or maintain consistent consumption to keep INR levels within the therapeutic range.
✦ 台美臨床差異
美國的抗凝血教育強調飲食的「穩定性」，非完全禁止；台灣則需視病人狀況及醫囑，強調適量攝取。