30 Questions
What is the purpose of the disinfection process for the needle?
To kill as many of the remaining microbes as possible
Why is it impossible to visually determine when all the microbes have been removed during the decontamination processes?
Because some microbes are invisible to the naked eye
What is the main purpose of the matrix of slime secreted by microbes in biofilms?
To provide protection from disinfectants and stressful situations
What are the two methods for detecting the presence of microscopic organisms mentioned in the text?
Viewing them up close with light and electron microscopes or culturing the microbes until they grow
What is the role of microbiologists in the detection of microbial presence?
To detect and identify microscopic organisms using specialized training and equipment
What makes protozoa more difficult to kill during decontamination compared to other microorganisms?
They resist disinfectants but heat will kill them
What is the first step to decontaminate the needle?
Disinfection process to remove visible dirt and soil
How are fungi usually identified in the laboratory?
By growing them in the laboratory and noting colony appearance
What is the main difference between bacteria and yeasts?
Yeasts multiply by cell division, while bacteria multiply mainly by budding
Why are bacteria considered to be the most frequent cause of infection in hospitals?
They can produce toxins that damage host tissues or protect themselves against the immune system
Why does disinfection or sterilization come after the cleaning process for reusable medical devices?
To remove any microbes missed by the cleaning procedures
What is the main purpose of following validated procedures and processes in CSSD for cleaning and decontaminating reusable medical devices?
To ensure the safety and sterility of the reusable medical devices
Why is it important for a CSSD specialist to have knowledge about microbiology and microbes?
To understand where the risks are and minimize them
What environmental conditions do all microorganisms require for growth and reproduction?
High moisture and food
Why is it important to clean reusable medical devices as soon as possible after use?
To prevent microbes from multiplying rapidly on the devices
How often does the top layer of dead skin cells and associated microbial biofilm get replaced?
Every 5-6 weeks
How many skin cells does the forearm shed per cm. per hour?
1300 cells
What is the recommended action if a fluid resistant gown becomes visibly soiled or wet?
Change the gown immediately and discard after use
What is the purpose of wearing dedicated shoes or clogs in the decontamination zone?
To minimize contamination from outside sources
Why are disposable shoe covers used in the decontamination zone?
To protect regular shoes from getting contaminated
Which of the following microbes is very difficult to remove from reusable medical devices?
Prions
How are viruses usually detected in the laboratory?
By culturing a sample using tissue culture methods
What is the most common method for identifying bacteria in the laboratory?
Culturing in the laboratory
Which of the following statements about prions is true?
They can be identified by antibody labeling
What is the main reason for treating the presence of all microbes in clinical environments as potentially harmful?
To prevent the spread of infection
What is the main purpose of Standard Precautions in healthcare?
To minimize the risk of infection regardless of the perceived infectious risk
Why is it important for staff to be familiar with maintenance of personal hygiene appropriate to the zone of the unit they are working in?
To prevent contamination of reusable medical devices
What is the rationale for applying Standard Precautions in the decontamination zone?
To handle potentially contaminated reusable medical devices
What is the chain of infection referred to within healthcare environments?
The means for transmitting infectious agents to susceptible hosts
Why are hospital patients particularly susceptible to infection?
Because they are exposed to a wide variety of infectious microbes in hospitals
Test your knowledge on bacteria identification methods and their resistance to disinfectants and heat. Explore the different techniques used in laboratories and learn about the characteristics of bacteria that help in their identification.
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