Acid-Fast Staining Methodology
18 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Who is the bacteriologist credited with devising the Gram staining method?

  • Hans Christian Andersen
  • Louis Pasteur
  • Robert Koch
  • Hans Christian Gram (correct)
  • What is the primary stain used in the Gram's staining method?

  • Iodine
  • Safranin
  • Methylene Blue
  • Crystal Violet (correct)
  • Which color do microorganisms appear if they retain the crystal violet-iodine complex in the Gram staining method?

  • Green
  • Blue
  • Purple brown (correct)
  • Red
  • What are microorganisms classified as if they are stained by the Gram's method?

    <p>Gram-positive or Gram non-negative</p> Signup and view all the answers

    What happens to microorganisms that are not stained by crystal violet in the Gram staining method?

    <p>They appear red</p> Signup and view all the answers

    What is the purpose of adding iodine solution on the smear during the Gram staining procedure?

    <p>To cover the fixed culture</p> Signup and view all the answers

    Why are non-acid fast organisms easily decolorized with acid alcohol during AFB staining?

    <p>Because they take up the counterstain readily</p> Signup and view all the answers

    What is the preferred specimen for AFB staining according to the text?

    <p>Early morning sputum</p> Signup and view all the answers

    What should a patient avoid doing prior to providing a sputum sample?

    <p>Gargling with mouthwash</p> Signup and view all the answers

    Why does the text recommend not opening AFB samples in the open?

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

    How should spot-AM sputum samples be collected according to the text?

    <p>First specimen at first consultation, second specimen in the morning</p> Signup and view all the answers

    Why is aerosol-induced collection recommended for ambulatory patients?

    <p>To improve sample quality by inducing coughing</p> Signup and view all the answers

    What is the next step after preparing the specimen smear for AFB staining?

    <p>Flood the slide with aqueous carbol fuchsin solution.</p> Signup and view all the answers

    What is the purpose of placing a strip of blotting paper or filter paper onto the slide during AFB staining?

    <p>To prevent the preparation from drying up.</p> Signup and view all the answers

    What should be done after allowing the sputum smear to air dry for 15 minutes?

    <p>Fix by flaming while moving the slide in a circular direction.</p> Signup and view all the answers

    What is the correct way to dispose of the disposable inoculating loop/applicator stick used in AFB staining?

    <p>Submerge in a container with sand and Sodium hypochlorite solution before disposal.</p> Signup and view all the answers

    What should be avoided during the fixing step of sputum smear preparation?

    <p>Overheating the slide.</p> Signup and view all the answers

    What is the purpose of washing off the excess stain with tap water during AFB staining?

    <p>To remove excess stain after staining.</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Browser