護理師監督一位新進護理師進行中央靜脈導管（CVC）換藥。哪項行動需立即介入？
A nurse is supervising a newly licensed nurse who is performing a central venous catheter (CVC) dressing change. Which action by the new nurse requires immediate intervention?
- AUsing a sterile technique while touching the insertion site✓ 正解在觸碰插入口時使用無菌技術
- BCleaning the site with chlorhexidine in a circular motion以環形動作使用氯己定清潔患部
- CWearing clean gloves to remove the old dressing戴清潔手套移除舊敷料
- DAllowing the site to air dry before applying the new dressing在貼上新敷料前讓患部自然風乾
中央靜脈導管（CVC）是直接通往心臟大血管的通道，發生導管相關血流感染（CRBSI）的風險極高。操作過程必須嚴格遵守無菌技術（Aseptic Technique）。選項 A 中直接觸碰插入口（Insertion Site）是嚴重的無菌操作缺失，即便戴著無菌手套，手的表面仍可能在操作過程中觸碰非無菌區而污染，此舉必須立即介入以防止醫源性感染。
A central venous catheter (CVC) provides direct access to the great vessels near the heart, carrying a high risk of catheter-related bloodstream infection (CRBSI). The procedure must strictly follow aseptic technique. In option A, directly touching the insertion site represents a serious breach of aseptic technique; even while wearing sterile gloves, the surface of the hand may inadvertently contact non-sterile areas during the procedure and become contaminated. Immediate intervention is required to prevent iatrogenic infection.