進行無菌傷口護理時，哪項行動是正確的？
Which action is correct when performing a sterile dressing change on a wound?
- ADiscard the first edge of the sterile drape丟棄無菌單的第一個邊緣
- BReach over the sterile field越過無菌區伸手
- CUse sterile gloves before opening the package在打開包裝前戴上無菌手套
- DKeep the sterile field above waist level✓ 正解保持無菌區在腰部以上
無菌操作（aseptic technique）是預防感染的關鍵，尤其在進行傷口換藥時。無菌原則確保了無菌物品與非無菌物品之間不會發生交叉污染。 核心概念：無菌區域（sterile field）是指僅有無菌物品存在的空間。任何非無菌物品（包括未消毒的物體、人體部位、空氣等）接觸到無菌區域，都會使其失去無菌狀態。 臨床思路：無菌操作的執行需要細心和對原則的嚴格遵守。從準備到執行，每一個步驟都關係到傷口是否會受到感染，進而影響病人的恢復。
Aseptic technique is essential to prevent infection, especially when performing wound dressing changes. The principles of asepsis ensure that there is no cross-contamination between sterile and non-sterile items. Core concept: a sterile field is a space that contains only sterile items. Contact between any non-sterile item (including non-sterilized objects, body parts, or air) and the sterile field causes loss of sterility. Clinical reasoning: aseptic technique requires meticulousness and strict adherence to principles. From preparation to execution, every step affects whether the wound will become infected, and thus the client's recovery.