護理師照顧一名感染艱難梭菌（C. diff）的病人。哪項措施最能有效防止病原體傳播給其他病人？
The nurse is caring for a client with Clostridioides difficile (C. diff) infection. Which action is most effective in preventing the spread of this pathogen to other clients?
- AUsing alcohol-based hand rub after exiting the room離開房間後使用酒精性乾洗手
- BWearing a surgical mask during client care在提供病人照護期間佩戴外科口罩
- CWashing hands with soap and water✓ 正解用肥皂和水洗手
- DMaintaining a 3-foot distance from the client與病人保持三英尺的距離
艱難梭菌（C. diff）會產生芽孢，酒精乾洗手液（A）無法有效滅除芽孢。必須使用肥皂與流動水（C）進行物理性的摩擦沖洗，才能將芽孢從皮膚移除。外科口罩（B）和社交距離（D）主要針對飛沫傳染，而 C. diff 屬於接觸傳染，應採取接觸隔離措施並加強手部衛生。
Clostridioides difficile (C. diff) produces spores, and alcohol-based hand rubs (A) cannot effectively eliminate these spores. Soap and running water (C) must be used to mechanically scrub and rinse the spores from the skin. Surgical masks (B) and physical distancing (D) are aimed at droplet transmission, whereas C. diff spreads via contact transmission—contact precautions must be implemented and hand hygiene reinforced.
美國醫療機構普遍嚴格執行 C. diff 專用肥皂洗手規範；台灣部分醫院可能因洗手台設置位置不便而導致執行率落差。