Why should large equipment be kept out of the airflow path around the sterile field?

• A. To maximize patient warming
• B. To improve staff communication
• C. To prevent disruption of airflow and potential contamination
• D. To reduce noise

Answer: (C)

Keeping large equipment out of the airflow path around the sterile field protects the sterile zone by preserving clean, laminar air movement. In the operating room, the air is designed to flow in a controlled pattern from ceiling diffusers over the sterile field to sweep away dust and microorganisms. When bulky items are in that path, they disrupt the smooth flow, creating turbulence and eddies that can pull contaminants into or onto sterile instruments and drapes. This disruption raises the risk of contaminating the wound or the sterile field. So the goal is to minimize obstacles to airflow to maintain the protective air curtain and reduce infection risk. It’s not about warming the patient, improving communication, or reducing noise, since those factors don’t directly influence the sterility of the field.