一位病人開始服用 Warfarin。哪些陳述顯示病人對用藥有正確理解？（選所有適合的）
A nurse is educating a client starting warfarin therapy. Which statements by the client indicate a correct understanding? (Select all that apply.)
- AI will maintain a consistent intake of green leafy vegetables✓ 正解我會保持綠色葉菜類蔬菜攝取量的一致性
- BI should use a soft-bristled toothbrush✓ 正解我應該使用軟毛牙刷
- CI will use aspirin if I have a headache如果我頭痛，我會服用阿斯匹靈
- DI need to report any black or tarry stools to my provider✓ 正解我需要向我的醫療提供者報告任何黑色或焦油樣糞便
- EI should wear a medical alert bracelet✓ 正解我應該佩戴醫療警示手環
Warfarin 是一種維生素 K 拮抗劑，透過抑制肝臟合成依賴維生素 K 的凝血因子（II, VII, IX, X）來發揮作用。病人衛教重點在於維持凝血功能的穩定。攝取維生素 K 的食物（如深綠色蔬菜）需保持穩定，不可突然增加或減少，以免影響藥效。此外，由於抗凝血作用會增加出血風險，病人須採取預防損傷的居家措施，並對異常出血徵兆（如黑便、牙齦出血）保持高度警覺。
Warfarin is a vitamin K antagonist that exerts its effect by inhibiting the hepatic synthesis of vitamin K-dependent clotting factors (II, VII, IX, and X). The key point of patient education is to maintain stable clotting function. Intake of vitamin K-containing foods (such as dark green leafy vegetables) should remain consistent and not be suddenly increased or decreased, as fluctuations affect drug efficacy. Furthermore, because of the increased risk of bleeding from the anticoagulant effect, the client must take precautions to prevent injury at home and remain highly vigilant for signs of abnormal bleeding (such as black stools or gum bleeding).