Which practice best supports maintaining a sterile field during instrument handling?

• A. Keeping movement to a minimum and avoiding reaching over the field
• B. Reaching over the sterile field to pass objects
• C. Allowing non-sterile surfaces to touch sterile items
• D. Exposing sterile gloves to non-sterile air between uses

Answer: (A)

Maintaining a sterile field relies on keeping disturbances to a minimum to prevent air currents and accidental contact from introducing contaminants. When movement is reduced and you avoid reaching over the field, you lessen the chance that microbes from the surrounding environment will drift into the sterile zone or that a glove or instrument will be touched by nonsterile surfaces. Reaching over the field to pass objects, allowing non-sterile surfaces to touch sterile items, or exposing sterile gloves to non-sterile air all break that barrier and increase infection risk. Keeping motions steady and staying on the same side of the sterile field helps preserve the integrity of the sterile environment throughout instrument handling.