護理師被分配照顧四名病人。為了維持安全與感控，哪位病人應安置於單人房？
A nurse is assigned to four clients. Which client should be placed in a private room to maintain safety and infection control?
- AA client who is 2 days post-appendectomy with intact incision剖腹手術後第 2 天且切口完整的病人
- BA client with a controlled blood glucose level of 150 mg/dL血糖控制穩定在 150 mg/dL 的病人
- CA client admitted for observation after a minor concussion因輕微腦震盪入院觀察的病人
- DA client with an uncontained draining wound infected with MRSA✓ 正解患有未妥善包覆且感染 MRSA 之引流傷口病人
安置單人房的首要考量是「污染源是否可控」。MRSA 屬於接觸傳染，若傷口滲出液無法被敷料完全覆蓋（Uncontained draining wound），會嚴重污染周遭環境，必須優先隔離。B、A、C 病人均無傳染性風險或其傷口處於閉合狀態，可與他人共用病房。這是分級隔離中的臨床判斷要點。
The primary consideration when assigning a private room is whether the source of contamination can be controlled. MRSA is transmitted by contact; if wound drainage cannot be fully contained by the dressing (uncontained draining wound), it will significantly contaminate the surrounding environment, so this client must be isolated first. Clients B, A, and C have no infectious risk or have wounds in a closed state and can share a room with others. This represents the clinical decision-making at the heart of tiered isolation.
美國對 MRSA 的接觸隔離執行非常徹底（一律單人房或同病隔離）；台灣因病床有限，有時會將 MRSA 放在一般病房但加強防護。