下列哪項是清潔技術（Medical Asepsis）的範例？
Which of the following is an example of medical asepsis?
- AHand hygiene before patient contact✓ 正解接觸患者前進行手部衛生
- BSurgical hand scrubbing外科刷手
- CPerforming a sterile dressing change進行無菌敷料更換
- DSterilizing equipment in an autoclave在高壓滅菌鍋中滅菌設備
清潔技術（Medical Asepsis）的核心目標是減少環境及病人身上的微生物總數，以降低傳播風險。這屬於日常護理常規，而非完全無菌。手部衛生是阻斷病原體經由醫療人員雙手傳播至病人的最有效手段，屬於標準預防措施的一環，適用於所有病人護理。其餘選項如手術刷手、無菌更換敷料及高壓滅菌，皆屬於無菌技術（Surgical Asepsis），旨在消滅所有微生物以防止侵入性操作導致感染。
The core goal of medical asepsis (clean technique) is to reduce the total number of microorganisms in the environment and on the patient in order to lower the risk of transmission. It belongs to daily nursing routines and is not completely sterile. Hand hygiene is the most effective measure for interrupting transmission of pathogens from the hands of healthcare personnel to patients; it is part of standard precautions and applies to the care of all patients. The other options, such as surgical hand scrubbing, sterile dressing changes, and autoclaving, all fall under surgical asepsis, which aims to eliminate all microorganisms in order to prevent infection from invasive procedures.