During wound irrigation, which protocol minimizes contamination?

• A. Use sterile solution, maintain a sterile field, clean from least contaminated to most contaminated, flush from center of wound outward, avoid touching sterile surfaces.
• B. Use tap water, ignore sterile field, clean from most contaminated to least contaminated.
• C. Touch sterile surfaces with bare hands.
• D. Leave old dressing in place during irrigation.

Answer: (A)

The key idea is preserving a sterile environment and directing the cleaning in a way that prevents introducing or spreading bacteria. Using sterile solution and maintaining a sterile field create a barrier against microbes. Cleaning from the least contaminated area to the most contaminated helps keep contaminants from being dragged into the wound. Flushing from the center of the wound outward pushes debris away toward the periphery, reducing the chance that contaminants re-enter the wound bed. Avoid touching sterile surfaces with bare hands because that breaks sterility and can transfer organisms. This approach minimizes contamination compared with methods that use nonsterile fluids, disregard sterile technique, or involve touching or bypassing sterile barriers.