Among the following, which is the primary active ingredient used in chemical vapor sterilization?

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Multiple Choice

Among the following, which is the primary active ingredient used in chemical vapor sterilization?

In chemical vapor sterilization, the essential sterilant is formaldehyde in vapor form. When the chamber is heated, formaldehyde vapor fills the space and penetrates instruments and wraps. It works by cross-linking proteins and nucleic acids in microorganisms, effectively destroying bacteria, viruses, fungi, and spores. The other substances listed (methanol, acetaldehyde, ethanol) aren’t the primary sterilizing agent in this method; they mainly serve as solvents or carriers to help form the vapor but don’t provide the same broad sterilization. Because formaldehyde is toxic, handling CVS requires proper ventilation and safety precautions.

In chemical vapor sterilization, the essential sterilant is formaldehyde in vapor form. When the chamber is heated, formaldehyde vapor fills the space and penetrates instruments and wraps. It works by cross-linking proteins and nucleic acids in microorganisms, effectively destroying bacteria, viruses, fungi, and spores. The other substances listed (methanol, acetaldehyde, ethanol) aren’t the primary sterilizing agent in this method; they mainly serve as solvents or carriers to help form the vapor but don’t provide the same broad sterilization. Because formaldehyde is toxic, handling CVS requires proper ventilation and safety precautions.

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