Which method is used for sterilizing heat-sensitive items?

The method used for sterilizing heat-sensitive items is ethylene oxide sterilization. This process is particularly useful for materials that cannot withstand high temperatures and moisture, which are characteristics of steam sterilization and dry heat sterilization. Ethylene oxide is a gaseous agent that permeates packaging and diffuses through the items, effectively killing microorganisms without the need for heat.

This method operates at lower temperatures, typically between 37 to 63 degrees Celsius, making it suitable for delicate instruments, plastics, and electrical equipment. It allows for thorough sterilization without damaging the materials, which is crucial in settings where maintaining the integrity of the item is important.

Other methods, such as steam and dry heat sterilization, employ high temperatures that could compromise the integrity of heat-sensitive items. Radiation sterilization, while effective for certain applications, is less commonly used for routine sterilization in clinical settings. Thus, ethylene oxide is often the preferred choice for ensuring the safety and usability of heat-sensitive medical instruments and supplies.