護理師照護一位使用攜帶式傷口引流管的術後病人，採取哪項行動能確保裝置運作正常以降低感染風險？
A nurse is caring for a postoperative client who has a portable wound suction device. Which action ensures the device is functioning correctly to reduce the risk of infection?
- AClean the wound site with hydrogen peroxide daily每天用雙氧水清潔傷口部位
- BPosition the drainage bag higher than the wound level將引流袋置於高於傷口的位置
- CEmpty the reservoir only when it is completely full僅在儲液囊完全充滿時才排空
- DKeep the device compressed to maintain negative pressure✓ 正解保持裝置壓縮狀態以維持負壓
攜帶式引流裝置（如 Hemovac 或 Jackson-Pratt）依賴負壓抽吸來移除傷口滲液，防止滲液積聚導致細菌滋生。維持裝置壓縮狀態是確保負壓持續的核心步驟，若裝置膨脹則負壓喪失，引流效果會下降，增加感染與組織癒合不良風險。
Portable drainage devices (such as Hemovac or Jackson-Pratt) rely on negative-pressure suction to remove wound drainage and prevent fluid accumulation that could promote bacterial growth. Maintaining the device in a compressed state is essential to sustaining negative pressure; if the device expands, the negative pressure is lost, drainage efficacy declines, and the risk of infection and poor tissue healing increases.
美台皆強調負壓維持，但台灣臨床常見病患或家屬頻繁更換引流袋，護理師需加強教導無菌操作技術。