Microbiology: Normal Flora vs. Infectious Bacteria
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Questions and Answers

What should you do when you are uncertain about the significance of a bacteria from a specimen?

  • Consult online resources for guidance
  • Conduct more tests without consulting anyone
  • Discuss the situation with the attending physician (correct)
  • Make a judgement call based on your experience
  • Why is it important to involve the attending physician when uncertain about bacteria significance?

  • To ensure proper protocol is followed
  • To get a second opinion on the test results
  • To determine the best course of treatment (correct)
  • To confirm the laboratory test results
  • What is the primary concern when dealing with uncertainty about bacteria significance?

  • The safety of the laboratory personnel
  • The potential impact on the patient's treatment (correct)
  • The cost of additional testing
  • The accuracy of the laboratory test results
  • What is the role of the attending physician in cases of uncertainty about bacteria significance?

    <p>To make decisions about patient treatment</p> Signup and view all the answers

    What is the outcome of not involving the attending physician in cases of uncertainty about bacteria significance?

    <p>Increased risk of misdiagnosis</p> Signup and view all the answers

    What is the significance of distinguishing pathogenic bacteria from normal flora?

    <p>To determine the cause of the infection</p> Signup and view all the answers

    What is the role of normal flora in some infections?

    <p>They may contribute to the infection</p> Signup and view all the answers

    Why is it important to consider the microbial flora at the site of infection?

    <p>To understand the role of normal flora in the infection</p> Signup and view all the answers

    What is the relationship between normal flora and pathogenic bacteria?

    <p>They can be distinguished from each other</p> Signup and view all the answers

    What is the significance of normal flora in the context of infection?

    <p>It may be present at the site of infection</p> Signup and view all the answers

    What is the process that occurs in the nucleus of eukaryotic cells?

    <p>DNA replication</p> Signup and view all the answers

    Which process is responsible for creating a copy of DNA?

    <p>DNA replication</p> Signup and view all the answers

    What is the term for the creation of RNA from DNA?

    <p>RNA transcription</p> Signup and view all the answers

    Which process involves the creation of the cell's outer layer?

    <p>Cell wall synthesis</p> Signup and view all the answers

    What is the process responsible for creating the cell's outer layer in prokaryotic cells?

    <p>Cell membrane synthesis</p> Signup and view all the answers

    What is monitored in the experiment?

    <p>The micro-organism's growth or lack of growth</p> Signup and view all the answers

    What is indicated by the micro-organism's growth?

    <p>Resistance to the drug</p> Signup and view all the answers

    What is indicated by the micro-organism's lack of growth?

    <p>Sensitivity to the drug</p> Signup and view all the answers

    Why is the micro-organism's growth or lack of growth monitored?

    <p>To determine the micro-organism's sensitivity or resistance to the drug</p> Signup and view all the answers

    What is NOT monitored in the experiment?

    <p>The micro-organism's movement</p> Signup and view all the answers

    What criteria are used to include bacteria in Table (1)?

    <p>Bacteria for which standardized testing procedures are available</p> Signup and view all the answers

    Which organization recommends standardized testing procedures for Table (1) bacteria?

    <p>National Committee for Clinical Laboratory Standards</p> Signup and view all the answers

    What is the primary purpose of Table (1)?

    <p>To outline standardized testing procedures</p> Signup and view all the answers

    What is unique about the bacteria included in Table (1)?

    <p>They have standardized testing procedures</p> Signup and view all the answers

    Why are standardized testing procedures important for Table (1) bacteria?

    <p>To standardize lab procedures</p> Signup and view all the answers

    Study Notes

    Distinguishing Bacterial Infections from Normal Flora

    • Bacteria need to be differentiated from normal flora present at the site of infection
    • Normal flora may be contributing to the infection in some situations

    Uncertainty in Bacterial Significance

    • When unsure about the significance of a bacteria from a specimen, discuss with the attending physician
    • Importance of clarifying the role of bacteria in infection

    Mechanisms of Antibiotic Action

    • Cell wall synthesis inhibition
    • Cell membrane synthesis inhibition
    • DNA replication inhibition
    • RNA transcription inhibition

    Antibiotic Resistance and Sensitivity

    • Micro-organism growth indicates resistance to the drug
    • Lack of growth indicates sensitivity to the drug
    • Monitoring of growth or lack of growth to determine antibiotic effectiveness

    Standardized Testing for Bacterial Susceptibility

    • Table (1) only includes bacteria with standardized testing procedures available
    • National Committee for Clinical Laboratory Standards outlines and recommends testing procedures

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    Description

    This quiz covers the distinction between normal flora and infectious bacteria at the site of infection. It explores how normal flora can contribute to infection and when to distinguish between the two.

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