parasite ,Laboratory Diagnosis of CNS Infections
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Questions and Answers

What is typically used for the laboratory diagnosis of CNS infections?

  • Urine samples
  • Blood serum specimens
  • Saliva analysis
  • Cerebrospinal fluid (CSF) (correct)
  • Which procedure is performed to collect CSF for diagnosing CNS infections?

  • Thoracentesis
  • Lumbar puncture (correct)
  • Arthrocentesis
  • Venipuncture
  • Which of the following is a common symptom associated with CNS infections?

  • Muscle growth
  • Weight loss
  • Convulsions/seizures (correct)
  • Increased appetite
  • What conditions can lumbar puncture help diagnose?

    <p>CNS infections</p> Signup and view all the answers

    What is the primary anatomical area accessed during a lumbar puncture?

    <p>Lumbar region</p> Signup and view all the answers

    What is the primary purpose of the Gram stain in the context of CSF analysis?

    <p>To identify the presence and type of bacteria in CSF</p> Signup and view all the answers

    The Ziehl Neelsen stain is primarily used to detect which type of bacteria?

    <p>Acid-fast bacilli</p> Signup and view all the answers

    Which combination of stains would be used to gain comprehensive information about bacterial presence in CSF?

    <p>Gram stain and Ziehl Neelsen stain</p> Signup and view all the answers

    What type of bacteria can be missed if only Gram staining is performed in CSF examination?

    <p>Acid-fast bacteria</p> Signup and view all the answers

    In the context of CSF microbiological analysis, what is a limitation of using only a Gram stain?

    <p>It cannot differentiate between bacterial and fungal infections.</p> Signup and view all the answers

    Study Notes

    Laboratory Diagnosis of CNS Infections

    • Cerebrospinal fluid (CSF) is primarily collected via lumbar puncture for diagnosing CNS infections.
    • Gram stain and Ziehl Neelsen stain are utilized to identify the type and presence of bacteria in CSF.
    • Mortality rates from CNS infections are significant: 30% in children and 80% in the elderly.

    Prevention Strategies

    • Pneumococcal conjugate vaccine (PCV13) and pneumococcal polysaccharide vaccine (PPSV23) offer effective protection against pneumococcal infections.
    • Transmission of CNS infections typically occurs through prolonged, close contact with an infected individual.

    Arboviral Encephalitis Prevention

    • Prevention involves controlling arthropod vectors that transmit encephalitis viruses, such as mosquitoes and ticks.

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    Description

    This quiz focuses on the laboratory diagnosis of central nervous system infections, particularly emphasizing the role of cerebrospinal fluid (CSF) obtained through lumbar puncture. Test your knowledge on convulsions, seizures, and muscle control in the context of CNS diagnostics.

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