19 Questions
How can microbial disinfection be achieved with a thermal washer-disinfector?
By monitoring the length of time at a specific temperature
What factors affect the effectiveness of chemical disinfection?
Initial number of microbes present, temperature, pH, and concentration
Where is chemical disinfection most commonly used as a primary method?
Endoscopy units
How is the adequacy of chemical disinfection processes typically confirmed?
Microbiological validation defining concentration, contact time, and minimum/maximum temperatures
What does disinfection aim to achieve on inanimate objects?
Eliminate many or all pathogenic micro-organisms
What hazardous property is associated with mixing bleach and ammonia?
Release of lethal chlorine gas
Which of the following is NOT a characteristic of process chemicals according to the Association for the Advancement of Medical Instrumentation (AAMI)?
High-foaming
Which factor should be considered when choosing process chemicals for medical device decontamination?
Compatibility with the medical device
What should be determined by the manufacturer's instructions for use (IFU) and validated during commissioning?
Dosage of process chemicals or detergent
Which of the following is NOT recommended when handling and storing process chemicals?
Store all chemicals together for convenience
What is the minimum treatment recommended for reprocessing medical devices that cannot be sterilized?
High-level disinfection
Where is low-level disinfection recommended to be used for reprocessed medical devices?
In non-critical sites
How does drying contribute to the reprocessing of medical devices?
Reduces risk of recontamination during inspection
What should be avoided as a drying agent for reprocessed medical devices?
Alcohol
What is the main agent that affects cleaning of used surgical devices prior to sterilization?
Process chemical in the wash area
What is the most important factor to consider when selecting the water quality for the cleaning process?
Compatibility with the washer-disinfector and medical devices
Which of the following water quality factors can lead to corrosion of medical devices during reprocessing?
Ionic contaminants such as heavy metals, phosphates, and silicates
Which of the following personal protective equipment (PPE) measures should be taken when handling chemicals such as detergents, rinse aids, and disinfectants?
All of the above
What is the purpose of the water quality considerations in the cleaning process?
All of the above
Test your knowledge on disinfection methods including thermal and chemical techniques. Learn about the processes involved in thermal disinfection with washer-disinfectors and the factors affecting the effectiveness of chemical disinfection.
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