AST Surgical Technologist Practice Exam

When perforated metal trays are placed on the shelves of the steam sterilizing cart, they should be positioned:

1. Vertical

2. On their sides

3. Flat

4. Upside down

The correct answer is: Flat

The correct positioning of perforated metal trays in a steam sterilization cart is flat. When trays are laid flat, it allows for even distribution of steam and heat throughout the contents within the tray. This is crucial in achieving proper sterilization, as steam needs to circulate freely to come into contact with all surfaces and eliminate any microorganisms effectively. If trays were positioned upright, on their sides, or upside down, air pockets could form, which can obstruct steam from reaching certain areas. This can create cold spots and compromise the sterilization process. Thus, ensuring that trays are flat maximizes contact with steam, contributing to a more effective and reliable sterilization outcome.