一位服用華法林（Warfarin）的病人。哪種飲食選擇顯示需要進一步的飲食衛教？

Warfarin 的作用機制為維生素 K 拮抗劑。菠菜（Spinach）含有極高的維生素 K，會抵銷華法林的抗凝血效果，影響 PT/INR 數值。病人應保持攝取含維生素 K 食物的「穩定性」，而非禁止，但此選項顯示病人對此攝取需謹慎的認知可能不足，故需衛教。

Warfarin functions as a vitamin K antagonist, so consuming foods high in vitamin K, such as spinach, can interfere with its anticoagulant effect. While patients should maintain a consistent intake rather than avoiding these foods entirely, selecting spinach indicates a potential lack of understanding regarding the need for dietary stability to ensure therapeutic efficacy.

台灣飲食中含深綠色蔬菜較多，護理師需特別提醒病人保持飲食習慣固定，而非隨意變動攝取量。