下列哪項行為顯示違反了無菌技術原則？
Which of the following actions demonstrates a violation of sterile technique?
- AOpening a sterile package away from the body遠離身體開啟無菌包裝
- BKeeping the outer 1-inch border of the sterile drape dry保持無菌單布外側 1 英吋邊緣乾燥
- CTurning your back on the sterile field✓ 正解背對無菌區域
- DHolding sterile items above waist level將無菌物品保持在腰部以上高度
無菌技術（Sterile Technique）要求操作者對無菌區域保持高度警覺。一旦無菌區域離開視線，即無法確保其維持無菌狀態，因此背對無菌區是被嚴格禁止的。此外，無菌包裝邊緣（外圍 1 英吋）被視為「污染邊界」，操作時應格外注意。維持無菌需要護理師保持專注，任何違反視線監控的行為都可能導致污染，進而增加病人感染風險。
Sterile technique requires the practitioner to remain highly vigilant about the sterile field. Once the sterile field leaves the line of sight, sterility can no longer be guaranteed; therefore turning one's back to the sterile field is strictly prohibited. In addition, the outer 1-inch border of a sterile package is considered the contaminated boundary and should be handled with particular care. Maintaining sterility requires the nurse's full attention, and any violation of visual monitoring can cause contamination and increase the client's risk of infection.