護理師準備進行無菌傷口換藥，下列哪種行為顯示違反了無菌技術原則？
A nurse is preparing to perform a sterile dressing change. Which action by the nurse indicates a break in sterile technique?
- AOpening the sterile package away from the body背對身體方向打開無菌包裝
- BPlacing the sterile field at waist level將無菌區設置於腰部高度
- CReaching over the sterile field✓ 正解跨越無菌區
- DHolding the sterile forceps with tips pointed downward手持無菌鑷子時尖端朝下
無菌技術（Sterile technique）的基礎在於維持「無菌區（Sterile field）」的完整性。任何未經滅菌的物品（包括護理師的身體、衣物、未戴手套的手）若跨越無菌區，會導致飛沫污染或物品掉落，造成無菌區破壞。遵循「視線不離開無菌區」、「無菌區需高於腰部」及「避免跨越無菌區」是確保手術或換藥安全的核心原則。
The foundation of sterile technique is to maintain the integrity of the sterile field. Any unsterile item—including the nurse's body, clothing, or ungloved hands—crossing the sterile field can cause droplet contamination or fall onto the field, contaminating it. Following the principles of keeping the sterile field in view at all times, keeping the sterile field above waist level, and avoiding reaching over the sterile field is essential to ensuring safety during surgery or dressing changes.