How does sterile technique differ from clean technique?

• A. Sterile technique is used for noninvasive tasks
• B. Clean technique maintains a sterile field for invasive procedures
• C. Sterile technique reduces contamination during noninvasive care
• D. Sterile technique maintains a completely sterile field for invasive procedures; clean technique reduces contamination for noninvasive tasks

Answer: (D)

Sterile technique aims for a completely sterile field and is required for procedures that invade body tissues or involve sterile equipment, so any breach of the sterile field risks infection and means the field must be reestablished. Clean technique focuses on reducing contamination and preventing infection during noninvasive care; it uses standard precautions and keeps the environment as clean as needed, but it does not require a fully sterile field. This distinction explains why sterile technique is used for invasive procedures, while clean technique is used for noninvasive tasks.