— 降低風險 · MEDIUM · MCQ —
護理師正在對中央靜脈導管進行無菌換藥，下列哪項動作能維持無菌技術？
A nurse is performing a sterile dressing change on a central venous catheter. Which action by the nurse maintains aseptic technique?
- AWearing a clean mask during the procedure操作期間佩戴清潔口罩
- BTouching the edge of the sterile drape with bare hands to adjust it徒手觸摸無菌單邊緣以調整位置
- CApplying the transparent dressing only after the skin disinfectant is completely dry✓ 正解待皮膚消毒劑完全乾燥後再貼上透明敷料
- DCleaning the site using a circular motion starting from the periphery inward由周邊向中心以圓形運動清潔部位
— Explanation · 中文詳解 —
中央靜脈導管（CVC）換藥需嚴格遵守無菌操作（Aseptic technique）。核心概念是防止細菌進入血液循環（CRBSI）。消毒液（如 Chlorhexidine）必須完全乾燥後才能貼敷料，因為消毒液的乾燥過程即是殺菌過程，且未乾即貼會刺激皮膚。環形擦拭原則應由中心往外（Clean to dirty），避免污染中心處。
To maintain aseptic technique during a central line dressing change, the nurse must allow the skin disinfectant to dry completely before applying the dressing to ensure antimicrobial efficacy and prevent skin irritation. Cleaning should proceed from the center outward, and the sterile field must not be touched with bare hands.