IAHCSMM Ultimate IAHCSMM 2 — Questions and Answers
Question 1: Which sterilization method is most appropriate for heat-sensitive items such as flexible endoscopes?
- Steam autoclave at 134°C
- Ethylene oxide (EO) gas sterilization (Correct answer)
- Dry heat oven at 160°C
- Flash sterilization at 132°C
Correct answer: Ethylene oxide (EO) gas sterilization
Ethylene oxide (EO) gas sterilization operates at low temperatures, making it suitable for heat-sensitive items like flexible endoscopes.
Question 2: What does the term 'bioburden' refer to in the context of sterile processing?
- The weight limit of items placed in a sterilizer load
- The number of viable microorganisms on an item before sterilization (Correct answer)
- The chemical load of detergents used in decontamination
- The amount of organic soil on an instrument
Correct answer: The number of viable microorganisms on an item before sterilization
Bioburden refers to the number and types of viable microorganisms contaminating an item prior to sterilization.
Question 3: Which biological indicator (BI) is used to monitor steam sterilization cycles?
- Bacillus atrophaeus spores
- Geobacillus stearothermophilus spores (Correct answer)
- Clostridium difficile spores
- Staphylococcus aureus spores
Correct answer: Geobacillus stearothermophilus spores
Geobacillus stearothermophilus spores are the most resistant to moist heat and are the standard biological indicator for steam sterilization.
Question 4: What is the primary purpose of the decontamination area in a central service department?
- To store sterile supplies before distribution
- To assemble and package instruments for sterilization
- To receive and clean soiled instruments and equipment (Correct answer)
- To perform quality control testing on sterilizers
Correct answer: To receive and clean soiled instruments and equipment
The decontamination area is specifically designed to receive, sort, and clean soiled instruments to reduce the microbial load before further processing.
Question 5: Which type of packaging material allows steam to penetrate while maintaining sterility after processing?
- Aluminum foil
- Polyethylene bags sealed with heat
- Nonwoven polypropylene wrap (Correct answer)
- Latex rubber pouches
Correct answer: Nonwoven polypropylene wrap
Nonwoven polypropylene wrap (such as SMS wrap) is porous, allowing steam penetration during sterilization while providing a bacterial barrier after processing.
Question 6: At what minimum water temperature should the washer-decontaminator rinse cycle operate to ensure effective protein removal?
- 30°C (86°F)
- 45°C (113°F)
- 60°C (140°F) (Correct answer)
- 93°C (200°F)
Correct answer: 60°C (140°F)
A final rinse temperature of at least 60°C (140°F) helps remove residual detergent and protein while also providing some thermal disinfection.
Question 7: What is the correct term for the process of reducing the number of pathogenic microorganisms to a safe level, but not necessarily achieving sterility?
- Sterilization
- Disinfection (Correct answer)
- Decontamination
- Sanitization
Correct answer: Disinfection
Disinfection eliminates most pathogenic microorganisms but does not kill all microbial life, distinguishing it from sterilization.
IAHCSMM Ultimate IAHCSMM 2
Which sterilization method is most appropriate for heat-sensitive items such as flexible endoscopes?