— 藥理與非經腸給藥 · EASY · MCQ —
一位心房顫動病人服用華法林（Warfarin）。關於飲食攝取，護理師的哪項指導正確？
A client is prescribed Warfarin for atrial fibrillation. Which instruction by the nurse is correct regarding dietary intake?
- ATake the medication with orange juice與柳橙汁一起服用藥物
- BMaintain a consistent intake of vitamin K-rich foods✓ 正解維持富含維生素 K 食物的攝取量一致
- CIncrease intake of dark leafy greens增加深色葉菜類的攝取
- DAvoid all vegetables to prevent bleeding避免食用所有蔬菜以防止出血
— Explanation · 中文詳解 —
華法林（Warfarin）是一種維生素 K 拮抗劑，透過抑制肝臟合成凝血因子來達成抗凝血效果。維生素 K 的攝取量會直接影響華法林的藥效（即 INR 值）。臨床指導重點不在於「禁止」攝取維生素 K，而在於「維持攝取量的一致性」，讓醫師能根據穩定的飲食習慣來調整劑量，避免 INR 劇烈波動導致出血或栓塞風險。
Warfarin acts as a vitamin K antagonist, so maintaining a consistent daily intake of vitamin K-rich foods is crucial to prevent unpredictable fluctuations in INR levels. This consistency allows for stable anticoagulation therapy, avoiding the risks of bleeding or thromboembolism associated with erratic dietary changes.