護理師照護一位放置可攜式傷口引流裝置的術後病人，下列哪項措施能維持裝置功能？
A nurse is caring for a postoperative client who has a portable wound suction device. Which action by the nurse maintains the device's function?
- ACompress the drainage container to restore negative pressure✓ 正解壓縮引流容器以恢復負壓
- BEmpty the container only when it is completely full僅在容器完全充滿時才清空
- CIrrigate the tubing with sterile saline every 4 hours每 4 小時用無菌生理食鹽水沖洗管路
- DEnsure the drainage tubing is positioned above the surgical site確保引流管路位於手術部位上方
閉合式負壓引流裝置（如 Hemovac 或 Jackson-Pratt）依賴負壓抽吸作用。當引流球體脹起時，負壓消失，需由護理師手動壓扁球體並旋緊蓋子，使系統重建負壓。D 選項會造成引流液倒流引起感染，B 會因過度飽和導致負壓失效，C 除非有醫囑阻塞才執行，否則不應隨意沖洗以防感染。
Closed portable wound suction devices (such as Hemovac or Jackson-Pratt) rely on negative pressure. When the drainage bulb has re-expanded, the suction is lost, and the nurse must manually compress the bulb and tighten the cap to re-establish negative pressure. Option D would cause drainage to flow back and risk infection; option B would allow over-filling that defeats the suction; option C should only be performed when ordered for obstruction, since routine irrigation would increase infection risk.
台美臨床對於負壓引流裝置之維護原則一致，皆強調負壓維持與預防逆流。