Types of Bacteria in Surgical Microbiology

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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?

To classify bacteria based on their cell wall composition Signup and view all the answers

What happens when bacteria are stained with the Gram stain?

Gram-positive bacteria take on a purple color, while Gram-negative bacteria take on a red color Signup and view all the answers

How many bacterial species are estimated to exist?

One trillion or more Signup and view all the answers

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

Clostridium perfringens Signup and view all the answers

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

Presence of comorbidities in the patient Signup and view all the answers

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

48 hours Signup and view all the answers

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

Use of non-sterile sutures Signup and view all the answers

What can increase the risk of surgical site infection?

Early discharge from the hospital after surgery Signup and view all the answers

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

The risk of infection varies from patient to patient Signup and view all the answers

Which type of bacteria is Gram negative?

Cholera Signup and view all the answers

What shape are bacteria called if they are round?

Coccus Signup and view all the answers

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

Poor circulation Signup and view all the answers

Which type of organisms require oxygen for survival?

Bacillus anthracis Signup and view all the answers

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

Yellow or cloudy pus drainage from the incision site Signup and view all the answers

What is the primary shape of spirals?

Spirillum Signup and view all the answers

How can patients prevent infections before surgery?

Washing with an antiseptic cleanser before going to the hospital Signup and view all the answers

Which of the following is an anaerobic organism?

Clostridium botulinum Signup and view all the answers

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

Escherichia coli (E.coli) Signup and view all the answers

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

Diabetes Signup and view all the answers

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

Shaving can introduce infection under your skin Signup and view all the answers

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

Keep the sterile dressing applied by the surgeon for at least 48 hours Signup and view all the answers