What does sterilization mean?

What does sterilization mean?

• A. Process by which all microorganisms, including spores, are destroyed
• B. Selective killing of some bacteria
• C. Cleaning with soap and water
• D. Preserving bacteria for vaccines

Answer: (A)

Sterilization means destroying all microorganisms, including spores. It represents the highest level of microbial control, which is crucial for instruments and materials used in invasive procedures. Spores are highly resistant to many killing methods, so sterilization requires validated processes such as steam autoclaving, dry heat, certain chemical sterilants, or radiation, often confirmed with biological indicators that the process worked. This is different from disinfection, which reduces most but not all pathogens (and may not kill spores), and from cleaning or sanitizing, which removes soil or lowers microbial counts without achieving sterility. The other options describe processes that do not accomplish complete elimination of all microorganisms.

Sterilization means destroying all microorganisms, including spores. It represents the highest level of microbial control, which is crucial for instruments and materials used in invasive procedures. Spores are highly resistant to many killing methods, so sterilization requires validated processes such as steam autoclaving, dry heat, certain chemical sterilants, or radiation, often confirmed with biological indicators that the process worked. This is different from disinfection, which reduces most but not all pathogens (and may not kill spores), and from cleaning or sanitizing, which removes soil or lowers microbial counts without achieving sterility. The other options describe processes that do not accomplish complete elimination of all microorganisms.