During sterilization, hinged instruments should be kept

During sterilization, hinged instruments should be kept

• A. Closed
• B. Open
• C. Wrapped
• D. Disassembled

Answer: (B)

The key idea is that sterilization relies on steam reaching every surface of the instrument, including inside joints. Hinged instruments have recessed areas and gaps where air can linger. If the hinge is kept closed, that trapped air blocks steam from penetrating the joint, leaving parts of the instrument inadequately sterilized. Leaving the hinge open allows steam to circulate through the joint, ensuring all surfaces are exposed to the sterilizing conditions and promoting proper drying afterward. This reduces the risk of residual moisture and corrosion in the hinge. Once sterilized and dry, instruments can be wrapped for storage, but during the cycle the hinge should be left open.

The key idea is that sterilization relies on steam reaching every surface of the instrument, including inside joints. Hinged instruments have recessed areas and gaps where air can linger. If the hinge is kept closed, that trapped air blocks steam from penetrating the joint, leaving parts of the instrument inadequately sterilized. Leaving the hinge open allows steam to circulate through the joint, ensuring all surfaces are exposed to the sterilizing conditions and promoting proper drying afterward. This reduces the risk of residual moisture and corrosion in the hinge. Once sterilized and dry, instruments can be wrapped for storage, but during the cycle the hinge should be left open.