— 安全與感染控制 · MEDIUM · MCQ —
護理師為病人進行無菌傷口換藥，下列何種操作展現了正確的無菌技術？
A nurse is performing a sterile dressing change for a client's surgical wound. Which action demonstrates proper sterile technique?
- AReaching over the sterile field to grab a dropped item.越過無菌區撿拾掉落物品
- BTurning their back to the sterile field after it is open.無菌區打開後轉身背對無菌區
- CDampening the edges of the sterile field with sterile saline.以無菌生理食鹽水潤濕無菌區邊緣
- DKeeping all sterile items within the visualized sterile field.✓ 正解將所有無菌物品保持在可視的無菌區內
— Explanation · 中文詳解 —
無菌技術（sterile technique）的目的是防止微生物污染無菌區域，進一步預防傷口感染。其核心原則包括：無菌物品僅能接觸無菌物品；無菌物品一旦接觸非無菌物品即被污染；無菌區域應保持在視線範圍內，且高於腰部；潮濕會傳導污染。因此，所有無菌物品應保持在可視的無菌範圍內，護理師應隨時監控其狀態，避免無意間的污染。將物品越過無菌區、背對無菌區、或潮濕邊緣都可能導致污染。
Proper sterile technique requires keeping all sterile items within the visualized field to maintain asepsis and prevent contamination. Actions such as reaching over the field, turning one's back, or allowing moisture contact compromise sterility and increase infection risk.