Bacteria Identification and Disinfection Quiz
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Questions and Answers

Which microbe can be difficult to remove during cleaning and is not killed by disinfection or heat?

  • Bacteria
  • Commensals
  • Viruses (correct)
  • Prions

    • How are bacteria commonly identified in the laboratory?

  • By using molecular techniques
  • By their resistance to disinfectants
  • By evaluating their colony appearance (correct)
  • By causing damage to healthy human cells in culture

    • What method is typically used to detect and identify viruses in the laboratory?

  • Tissue culture methods (correct)
  • Biochemical tests
  • Comparing with a database
  • Using molecular methods

    • Which statement about prions is accurate?

    <p>They convert normally folded prions into abnormal ones</p> Signup and view all the answers

    What is the term for helpful microbes that protect against disease and stimulate the immune system?

    <p>Commensals</p> Signup and view all the answers

    In which layer of the skin are dead cells found?

    <p>Stratum corneum</p> Signup and view all the answers

    What is the primary function of the matrix of slime secreted by microbes in a biofilm?

    <p>To protect microbes from disinfectants and stressful situations</p> Signup and view all the answers

    Which statement accurately describes the impact of biofilms on medical devices?

    <p>Biofilms can form on reusable medical devices, making them more difficult to decontaminate</p> Signup and view all the answers

    Which microorganism type can form tough protective capsules known as cysts, making them resistant to disinfectants?

    <p>Protozoa</p> Signup and view all the answers

    What is the primary method for identifying fungi in a laboratory setting?

    <p>Observing colony appearance and microscopic examination</p> Signup and view all the answers

    Which microorganism type lacks a nucleus and multiplies by cell division?

    <p>Bacteria</p> Signup and view all the answers

    What type of microorganism is characterized by being larger than bacteria, having a nucleus, and multiplying mainly by budding?

    <p>Yeast</p> Signup and view all the answers

    What is the main challenge in knowing the exact number and types of microbes present on or in your hands, the water, the air, and your working environment?

    <p>The small size of the microbes makes it difficult to detect them visually</p> Signup and view all the answers

    What is the purpose of culturing the microbes until they grow into a detectable form?

    <p>To make the microbes easier to detect</p> Signup and view all the answers

    What is the role of microbiologists in detecting the presence of microbes?

    <p>To culture the microbes until they grow into a detectable form</p> Signup and view all the answers

    What is the first step in decontaminating a needle?

    <p>Removing any dirt, soil, and as many bacteria as possible</p> Signup and view all the answers

    Why is it impossible to visually tell when all microbes have been removed during the decontamination processes?

    <p>The small size of the microbes makes it difficult to detect them visually</p> Signup and view all the answers

    Why does the presence of large numbers of bacteria on the needle require decontamination?

    <p>To kill as many of the remaining microbes as possible</p> Signup and view all the answers

    What is the approximate rate at which the forearm sheds dead skin cells per hour?

    <p>1300 cells</p> Signup and view all the answers

    In which zones of the CSSD should staff change their personal protective equipment (PPE) before moving between them?

    <p>Inspection, Assembly, and Packaging zone and decontamination zone</p> Signup and view all the answers

    What type of workwear is emphasized in the Inspection, Assembly, and Packaging (IAP) or sterile storage zones in CSSD?

    <p>Low-lint uniform and head/hair cover</p> Signup and view all the answers

    What is the purpose of wearing fluid repellent masks with visor eye shields in the decontamination zone?

    <p>To reduce the risk of microbes being transferred to the eyes, nose, and mouth</p> Signup and view all the answers

    What is the best practice for footwear in the decontamination zone?

    <p>Wearing dedicated non-slip enclosed footwear</p> Signup and view all the answers

    How often should gloves be changed during activities likely to generate splashes of blood or body fluids in the decontamination zone?

    <p>Whenever they become visibly soiled or wet</p> Signup and view all the answers

    Which statement accurately reflects the information provided about the detection of microbes in the text?

    <p>The electron microscope allows us to see microbes that are smaller than what the light microscope can detect.</p> Signup and view all the answers

    What is the primary reason for disinfection or sterilization to come after the cleaning process for reusable medical devices?

    <p>To kill any microbes missed by the cleaning procedures due to surface imperfections or crevices.</p> Signup and view all the answers

    What is emphasized as an important consideration for specialists in CSSD (Central Sterile Services Department) when decontaminating reusable medical devices?

    <p>Strict compliance with validated procedures and processes developed by microbiologists.</p> Signup and view all the answers

    Why is it important for CSSD specialists to have knowledge about microbiology and microbes?

    <p>To understand where the risks are and why they follow specific procedures when decontaminating devices.</p> Signup and view all the answers

    What is a characteristic of microbial infections mentioned in the text?

    <p>Some microbial infections are no longer treatable using previously effective antibiotics.</p> Signup and view all the answers

    What environmental factor is highlighted as essential for microbial growth and reproduction?

    <p>Optimal range of moisture and food as essential requirements for microbial growth and reproduction.</p> Signup and view all the answers

    What is the purpose of wearing stud earrings in the CSSD?

    <p>To comply with work practices</p> Signup and view all the answers

    Which of the following is NOT considered as part of Standard Precautions in healthcare?

    <p>Treatment of primary disease</p> Signup and view all the answers

    What is the rationale behind applying Standard Precautions in the decontamination zone?

    <p>To prevent contamination of medical devices</p> Signup and view all the answers

    Why are hospital patients particularly susceptible to infection?

    <p>Limited functionality of the immune system</p> Signup and view all the answers

    What is the primary means for transmitting infectious agents to susceptible hosts?

    <p>Direct contact with infected surfaces</p> Signup and view all the answers

    What is the focus of healthcare staff to minimize the reservoir of infection in the hospital environment?

    <p>Thorough cleaning and disinfecting of environment and equipment</p> Signup and view all the answers

    Which microorganism has developed resistance and become much more dangerous in recent times?

    <p>Staphylococcus aureus</p> Signup and view all the answers

    What is the purpose of applying environmental controls as part of Standard Precautions?

    <p>To prevent contamination of reusable medical devices</p> Signup and view all the answers

    What is the primary focus when trying to break the chain of infection in hospital environments?

    <p>Use of infection control at all levels</p> Signup and view all the answers

    What is the purpose of hand hygiene in the IAP and sterile zones?

    <p>To prevent healthcare-associated infections including contamination of reusable medical devices</p> Signup and view all the answers

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