High-level disinfection is defined as what?

High-level disinfection is defined as what?

• A. Killing of pathogenic agents by using potent chemical
• B. Removing visible dirt
• C. Sterilization by heat
• D. Cleaning with soap and water

Answer: (A)

High-level disinfection uses potent chemical germicides to kill most pathogens on a surface or instrument, especially when heat-based sterilization isn’t possible. It aims to reduce the microbial burden to a safe level, typically destroying bacteria, viruses, and fungi, and in many cases most bacterial spores as well, though it does not guarantee absolute sterility. This is why it’s more thorough than cleaning but not the same as sterilization. The other options describe removing dirt, cleaning with soap and water, or sterilization by heat, which are different processes.

High-level disinfection uses potent chemical germicides to kill most pathogens on a surface or instrument, especially when heat-based sterilization isn’t possible. It aims to reduce the microbial burden to a safe level, typically destroying bacteria, viruses, and fungi, and in many cases most bacterial spores as well, though it does not guarantee absolute sterility. This is why it’s more thorough than cleaning but not the same as sterilization. The other options describe removing dirt, cleaning with soap and water, or sterilization by heat, which are different processes.