Wound Contamination & Surgical Infections Quiz

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Questions and Answers

Which of the following is the definition of bacterial infection?

  • Having more than 10^4 bacteria per gram of tissue
  • Having more than 10^6 bacteria per gram of tissue
  • Having more than 10^5 bacteria per gram of tissue (correct)
  • Having more than 10^7 bacteria per gram of tissue

Which of the following is the most common subtype of Surgical Site Infections (SSI)?

  • Deep incisional infections
  • Organ space infections
  • Superficial infections (correct)
  • Incisional infections

Which of the following is not a subtype of Surgical Site Infections (SSI)?

  • Superficial infections
  • Deep incisional infections
  • Incisional infections
  • Organ space infections (correct)

Which of the following is an example of a clean surgical wound?

<p>Total hip replacement (C)</p> Signup and view all the answers

Which of the following is the most contaminated type of surgical wound?

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

Which of the following is an example of a clean contaminated wound?

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

What is the infection rate range for contaminated wounds?

<p>5.8-28.6% (B)</p> Signup and view all the answers

When is the use of antibiotics prophylactically recommended for surgeries?

<p>Clean - contaminated surgeries (A)</p> Signup and view all the answers

What is the primary objective of aseptic surgery?

<p>To reduce the likelihood of infection (B)</p> Signup and view all the answers

What factors may affect a patient's ability to fight off infection during surgery?

<p>All of the above (D)</p> Signup and view all the answers

What is the preferred method for choosing antibiotics for small animals?

<p>Choosing based on culture results (B)</p> Signup and view all the answers

What is the recommended antibiotic for anaerobic organism coverage in small animals during surgery?

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

What is the preferred method of administering antibiotics for horses?

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

What is oxytetracycline used for in horses?

<p>Coverage against specific infections (D)</p> Signup and view all the answers

What is the spectrum of coverage for amoxycillin in small animals?

<p>Broad-spectrum good against gram-positive (C)</p> Signup and view all the answers

Which of the following is NOT a subtype of Surgical Site Infections (SSI)?

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

What is the most common subtype of Surgical Site Infections (SSI)?

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

Which type of surgical wound has the highest risk of infection development?

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

What is the definition of a bacterial infection?

<p>Having more than 105 bacteria per gram of tissue (C)</p> Signup and view all the answers

Which surgical procedure is an example of a clean wound?

<p>Total hip replacement (B)</p> Signup and view all the answers

What is the preferred method of administering antibiotics for horses?

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

What is the preferred antibiotic for anaerobic organism coverage during small animal surgery?

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

What is the spectrum of coverage for amoxycillin in small animals?

<p>Broad-spectrum good against gram-positive bacteria (B)</p> Signup and view all the answers

What is the reason for culturing and sensitivity testing before choosing an antibiotic for an animal?

<p>To choose an antibiotic based on culture results (D)</p> Signup and view all the answers

What is the preferred antibiotic for small animals with a limited spectrum of choice?

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

Which of the following is an example of a contaminated wound?

<p>Excision or drainage of an abscess (A)</p> Signup and view all the answers

What is the primary objective of aseptic surgery?

<p>To reduce the likelihood of infection (C)</p> Signup and view all the answers

When is the use of antibiotics prophylactically recommended for surgeries?

<p>For clean contaminated surgeries (D)</p> Signup and view all the answers

What are some host factors that may affect a patient's ability to fight off infection during surgery?

<p>Physical condition, nutritional status, age, concurrent metabolic disorders, and current medication (C)</p> Signup and view all the answers

What are some methods for reducing infections during surgery?

<p>Principles of aseptic technique, sterilisation of equipment, disinfection of theatre, length of anaesthesia, atraumatic technique, etc. (A)</p> Signup and view all the answers

Which of the following is the most common subtype of Surgical Site Infections (SSI)?

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

What is the infection rate range for contaminated wounds?

<p>0-4% (C)</p> Signup and view all the answers

What is the definition of a bacterial infection?

<p>Having more than 105 bacteria per gram of tissue (D)</p> Signup and view all the answers

Which type of surgical wound has the highest risk of infection development?

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

What are Surgical Site Infections (SSI's)?

<p>Infections of the tissues or organs exposed during an invasive procedure (D)</p> Signup and view all the answers

What is the preferred method of administering antibiotics for horses?

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

What is the recommended antibiotic for anaerobic organism coverage in small animals during surgery?

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

What is the spectrum of coverage for amoxycillin in small animals?

<p>Good against gram-positive only (A)</p> Signup and view all the answers

What is oxytetracycline used for in horses?

<p>To cover gram-negative bacteria (D)</p> Signup and view all the answers

When is the use of antibiotics prophylactically recommended for surgeries?

<p>Only for high-risk surgeries (C)</p> Signup and view all the answers

Which of the following is an example of a clean contaminated wound?

<p>Cholecystectomy (removal of the gall bladder) (D)</p> Signup and view all the answers

What is the primary objective of aseptic surgery?

<p>To reduce the likelihood of infection (C)</p> Signup and view all the answers

When is the use of antibiotics prophylactically recommended for surgeries?

<p>For clean wounds (B)</p> Signup and view all the answers

What factors may affect a patient's ability to fight off infection during surgery?

<p>Age and nutritional status (D)</p> Signup and view all the answers

What is the most contaminated type of surgical wound?

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

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Study Notes

Surgical Site Infections (SSI)

  • Definition: Bacterial infection that occurs within 30 days after surgery or within 1 year if an implant is left in place.
  • Subtypes: Superficial incisional SSI, Deep incisional SSI, Organ/space SSI.

Types of Surgical Wounds

  • Clean wound: No intrusion into the gastrointestinal, genitourinary, or respiratory tract, e.g., skin lesion excision.
  • Clean-contaminated wound: Entry into the gastrointestinal, genitourinary, or respiratory tract, but without significant spillage, e.g., elective cholecystectomy.
  • Contaminated wound: Gross spillage from the gastrointestinal, genitourinary, or respiratory tract, or inflammatory response, e.g., bowel perforation.
  • Dirty wound: Traumatic wound with retained devitalized tissue, or a surgical wound with a significant amount of non-viable tissue.

Antibiotic Use and Infection Prevention

  • Prophylactic antibiotic use is recommended for surgeries with high risk of infection, such as contaminated or dirty wounds.
  • Primary objective of aseptic surgery is to prevent infection.
  • Factors affecting a patient's ability to fight off infection during surgery: Age, nutrition, underlying disease, and medication.
  • Methods for reducing infections during surgery: Aseptic technique, prophylactic antibiotics, and proper wound care.

Antibiotic Choices for Animals

  • Preferred method for choosing antibiotics for small animals: Culture and sensitivity testing.
  • Preferred antibiotic for anaerobic organism coverage in small animals: Amoxycillin.
  • Preferred method of administering antibiotics for horses: Local administration.
  • Oxytetracycline is used for its broad-spectrum coverage in horses.

Infection Rates and Risk

  • Infection rate range for contaminated wounds: 3.1-11.8%.
  • Highest risk of infection development: Contaminated wounds.
  • Most common subtype of Surgical Site Infections (SSI): Superficial incisional SSI.

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