What is a proper way to sterilize items that cannot be exposed to heat?

The correct choice regarding the proper way to sterilize items that cannot be exposed to heat is immersion in glutaraldehyde followed by drying. Glutaraldehyde is a chemical agent that is used as a high-level disinfectant that can effectively kill bacteria, viruses, and spores when items are fully immersed for the appropriate duration.

This chemical sterilization method is particularly beneficial for heat-sensitive instruments and materials, making it a reliable alternative to heat sterilization methods such as autoclaving. It ensures that the items are adequately disinfected without the risks associated with heat exposure, which may damage delicate instruments or materials.

To achieve effective sterilization, it is critical to follow the manufacturer's instructions for concentration and time of exposure. After immersion in glutaraldehyde, it's essential to rinse the items thoroughly and allow them to dry to ensure no residual chemicals are left that could compromise health and safety.

Other methods such as simply washing with soap and water do not achieve sterilization but rather just disinfection, while air drying does not eliminate pathogens and is not a sterilization method at all. Immersion in high-level disinfectant, while useful, does not ensure the same level of sterility as glutaraldehyde if not followed up properly.