下列何項作為展現了護理師對於維護無菌區域的專業執行？
Which of the following actions demonstrates the nurse's commitment to maintaining a sterile field?
- AReaching over the sterile field to adjust a light跨越無菌區域調整燈光
- BHolding sterile items above waist level✓ 正解將無菌物品保持在腰部以上
- CKeeping the sterile field below waist level將無菌區域保持在腰部以下
- DTouching the edge of the sterile drape with ungloved hands以未戴手套的手觸碰無菌鋪巾邊緣
維護無菌區域（sterile field）的核心在於維持無菌物品的完整性，避免其接觸到非無菌物體。無菌區域的範圍被定義為無菌鋪巾（drape）的表面，且高度需在腰部以上，這是因為腰部以下通常被視為非無菌區，且視線無法完全監控。任何跨越無菌區的動作、接觸無菌邊緣，或將無菌物品置於低於腰部的位置，皆會導致污染風險，進而增加手術或處置部位感染的機率。護理師必須保持高度警覺，確保無菌區域始終在視線範圍內，並嚴格執行無菌技術（aseptic technique）。
Maintaining a sterile field requires preserving the integrity of sterile items and preventing contact with non-sterile objects. The sterile field extends across the drape surface, and items must remain above waist level because below the waist is considered non-sterile and outside continuous visualization. Reaching over, touching the edge, or placing items below the waist all risk contamination, increasing surgical or procedural site infection. The nurse must remain vigilant, keep the field in continuous view, and strictly apply aseptic technique.