Types of Bacteria in Surgical Microbiology
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Questions and Answers

What are bacteria?

  • Very small, usually single-celled organisms (correct)
  • Large, multi-celled organisms
  • Viruses that infect humans
  • Microscopic plants

How are bacteria classified based on the Gram stain test?

  • By their preferred temperature for growth
  • By their shape and size
  • By the presence of peptidoglycan in their cell walls (correct)
  • By their ability to cause diseases

Who invented the Gram stain test?

  • Hans Christian Gram (correct)
  • Alexander Fleming
  • Louis Pasteur
  • Robert Koch

What is the purpose of the Gram stain test?

<p>To classify bacteria based on their cell wall composition (D)</p> Signup and view all the answers

What happens when bacteria are stained with the Gram stain?

<p>Gram-positive bacteria take on a purple color, while Gram-negative bacteria take on a red color (D)</p> Signup and view all the answers

How many bacterial species are estimated to exist?

<p>One trillion or more (D)</p> Signup and view all the answers

What is the most common cause of gas gangrene mentioned in the text?

<p>Clostridium perfringens (A)</p> Signup and view all the answers

Which of the following is NOT listed as a cause of surgical site infection?

<p>Presence of comorbidities in the patient (C)</p> Signup and view all the answers

What is the recommended maximum duration for dressing change after surgery?

<p>48 hours (D)</p> Signup and view all the answers

Which of the following factors is NOT mentioned as contributing to surgical site infection?

<p>Use of non-sterile sutures (A)</p> Signup and view all the answers

What can increase the risk of surgical site infection?

<p>Early discharge from the hospital after surgery (C)</p> Signup and view all the answers

Which of the following statements is true based on the information provided in the text?

<p>The risk of infection varies from patient to patient (A)</p> Signup and view all the answers

Which type of bacteria is Gram negative?

<p>Cholera (D)</p> Signup and view all the answers

What shape are bacteria called if they are round?

<p>Coccus (A)</p> Signup and view all the answers

What are some risk factors for Surgical Site Infection (SSI)?

<p>Poor circulation (D)</p> Signup and view all the answers

Which type of organisms require oxygen for survival?

<p>Bacillus anthracis (B)</p> Signup and view all the answers

Which symptom is associated with Surgical Site Infection (SSI)?

<p>Yellow or cloudy pus drainage from the incision site (A)</p> Signup and view all the answers

What is the primary shape of spirals?

<p>Spirillum (C)</p> Signup and view all the answers

How can patients prevent infections before surgery?

<p>Washing with an antiseptic cleanser before going to the hospital (A)</p> Signup and view all the answers

Which of the following is an anaerobic organism?

<p>Clostridium botulinum (B)</p> Signup and view all the answers

What type of bacteria are difficult to treat due to multidrug-resistance?

<p>Escherichia coli (E.coli) (C)</p> Signup and view all the answers

Which condition can compromise the immune system and increase the risk of Surgical Site Infection (SSI)?

<p>Diabetes (B)</p> Signup and view all the answers

Why is it advised not to shave before surgery according to the text?

<p>Shaving can introduce infection under your skin (A)</p> Signup and view all the answers

What should patients do after surgery to prevent Surgical Site Infection (SSI)?

<p>Keep the sterile dressing applied by the surgeon for at least 48 hours (A)</p> Signup and view all the answers

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