— 安全與感染控制 · MEDIUM · MCQ —
護理師進行換藥操作，哪一步驟對維持無菌至關重要？
A nurse is performing a dressing change. Which step is essential to maintain asepsis?
- AClean the wound from the center to the outside✓ 正解由傷口中心向外側清潔
- BClean the wound with the same gauze pad repeatedly使用同一塊紗布反覆清潔傷口
- CUse sterile gloves to open the wrapper使用無菌手套打開包裝
- DClean the wound from the edges to the center由傷口邊緣向中心清潔
— Explanation · 中文詳解 —
無菌換藥的核心原則：傷口清潔須由「最乾淨」處往「最污染」處執行，所以從傷口中心向外擦拭（A）。由邊緣向中心擦會把皮膚菌帶入傷口；同一塊紗布重複擦會將菌帶回；用無菌手套打開包裝會污染手套外層（應在戴無菌手套前用乾淨手打開包裝）。
Aseptic wound care principle: clean from cleanest to most contaminated — center outward (A). Cleaning from edge to center brings skin flora into the wound; reusing the same gauze redistributes bacteria; using sterile gloves to open the wrapper contaminates them (the outer wrapper is non-sterile and should be opened with clean hands before donning sterile gloves).