Which item is listed under 15 minutes processing?

• A. Unwrapped metal instruments on open tray, hinges open
• B. Wrapped or covered instruments
• C. Syringes unassembled
• D. Dressings loosely packed

Answer: (A)

The time listed for processing shortens when there’s nothing blocking the sterilant from reaching every surface. Unwrapped metal instruments laid out on an open tray with the hinges opened expose all surfaces directly to steam or chemical sterilant, allowing rapid, thorough penetration. That straightforward exposure makes them eligible for the 15-minute processing cycle.

Wrapped or covered instruments introduce a barrier that the sterilant must penetrate, so they require longer cycles to ensure safety. Syringes that aren’t assembled often have lumens that can trap air and require extended exposure for interior surfaces to be sterilized. Dressings loosely packed can impede steam flow and aren’t handled in the same way as open, unwrapped instrument sets, so they’re not aligned with the shortest processing time.