Cold sterilization is used to sterilize which type of instruments?

Cold sterilization is used to sterilize which type of instruments?

• A. Fiberoptic scopes and other heat-sensitive instruments
• B. Large metal surgical tools
• C. Paper and cloth items
• D. Surgical drapes

Answer: (A)

Cold sterilization targets instruments that cannot tolerate heat or moisture. Delicate, heat‑sensitive tools—such as fiberoptic scopes and similar instruments with complex channels or sensitive optics—must be sterilized at low temperatures using chemical methods (for example, ethylene oxide gas, hydrogen peroxide plasma, or liquid chemical sterilants like glutaraldehyde or peracetic acid). These approaches avoid the damage heat sterilization would cause. In contrast, large metal surgical tools can withstand high temperatures and are typically sterilized by steam autoclaving. Paper and cloth items, as well as many drapes, are not treated by cold sterilization in routine practice because they are either disposable or do not require low-temperature chemical sterilants.

Cold sterilization targets instruments that cannot tolerate heat or moisture. Delicate, heat‑sensitive tools—such as fiberoptic scopes and similar instruments with complex channels or sensitive optics—must be sterilized at low temperatures using chemical methods (for example, ethylene oxide gas, hydrogen peroxide plasma, or liquid chemical sterilants like glutaraldehyde or peracetic acid). These approaches avoid the damage heat sterilization would cause.

In contrast, large metal surgical tools can withstand high temperatures and are typically sterilized by steam autoclaving. Paper and cloth items, as well as many drapes, are not treated by cold sterilization in routine practice because they are either disposable or do not require low-temperature chemical sterilants.