Nosocomial Infections MCQs

  1. What is the most common type of nosocomial infection?
    a) Surgical site infections
    b) Bloodstream infections
    c) Urinary tract infections
    d) Respiratory infectionsAnswer: c) Urinary tract infections
  2. Which pathogen is most commonly associated with nosocomial bloodstream infections?
    a) Staphylococcus aureus
    b) Escherichia coli
    c) Candida species
    d) Pseudomonas aeruginosaAnswer: c) Candida species
  3. Which of the following is a key preventive measure for nosocomial infections associated with central venous catheters?
    a) Routine antibiotic prophylaxis
    b) Proper hand hygiene
    c) Use of chlorhexidine for skin antisepsis
    d) Frequent catheter replacementAnswer: c) Use of chlorhexidine for skin antisepsis
  4. Which infection control measure is essential to prevent the spread of Clostridium difficile in healthcare settings?
    a) Routine use of hand sanitizers
    b) Use of contact precautions and frequent hand washing with soap and water
    c) Use of surgical masks
    d) Daily disinfection of environmental surfacesAnswer: b) Use of contact precautions and frequent hand washing with soap and water
  5. What is a common cause of surgical site infections (SSIs) in postoperative patients?
    a) Enterococcus species
    b) Staphylococcus aureus
    c) Klebsiella pneumoniae
    d) Mycobacterium tuberculosisAnswer: b) Staphylococcus aureus
  6. Which antibiotic-resistant organism is often associated with healthcare-associated infections and is known for causing severe infections in immunocompromised patients?
    a) Methicillin-resistant Staphylococcus aureus (MRSA)
    b) Vancomycin-resistant Enterococcus (VRE)
    c) Carbapenem-resistant Enterobacteriaceae (CRE)
    d) Clostridium difficileAnswer: c) Carbapenem-resistant Enterobacteriaceae (CRE)
  7. Which infection is associated with the use of ventilators in critically ill patients?
    a) Ventilator-associated pneumonia (VAP)
    b) Central line-associated bloodstream infection (CLABSI)
    c) Catheter-associated urinary tract infection (CAUTI)
    d) Surgical site infection (SSI)Answer: a) Ventilator-associated pneumonia (VAP)
  8. Which type of precautions is used to prevent the spread of airborne pathogens like tuberculosis in healthcare settings?
    a) Contact precautions
    b) Droplet precautions
    c) Airborne precautions
    d) Standard precautionsAnswer: c) Airborne precautions
  9. Which healthcare-associated infection is commonly linked to the overuse of broad-spectrum antibiotics?
    a) Methicillin-resistant Staphylococcus aureus (MRSA)
    b) Clostridium difficile infection
    c) Vancomycin-resistant Enterococcus (VRE)
    d) Pseudomonas aeruginosa infectionAnswer: b) Clostridium difficile infection
  10. What is the primary method for preventing the spread of methicillin-resistant Staphylococcus aureus (MRSA) in a hospital setting?
    a) Administering prophylactic antibiotics
    b) Implementing strict hand hygiene practices and contact precautions
    c) Frequent environmental cleaning with alcohol-based disinfectants
    d) Routine screening of all patients for MRSAAnswer: b) Implementing strict hand hygiene practices and contact precautions
  11. Which factor is a major risk for developing catheter-associated urinary tract infections (CAUTIs)?
    a) Prolonged use of indwelling urinary catheters
    b) Use of antibiotic prophylaxis
    c) Frequent catheter flushing
    d) Daily catheter replacementAnswer: a) Prolonged use of indwelling urinary catheters
  12. Which pathogen is most commonly associated with healthcare-associated infections following surgical procedures?
    a) Staphylococcus epidermidis
    b) Pseudomonas aeruginosa
    c) Enterobacter cloacae
    d) Candida albicansAnswer: a) Staphylococcus epidermidis
  13. What is the primary method for controlling the spread of multidrug-resistant organisms (MDROs) in healthcare settings?
    a) Using broad-spectrum antibiotics
    b) Implementing enhanced infection control measures including isolation precautions
    c) Limiting patient admissions
    d) Frequent environmental disinfection with bleachAnswer: b) Implementing enhanced infection control measures including isolation precautions
  14. Which infection control practice is critical for preventing the transmission of infections via contaminated surfaces and equipment?
    a) Proper hand hygiene
    b) Use of personal protective equipment (PPE)
    c) Routine environmental cleaning and disinfection
    d) Prophylactic antibiotic useAnswer: c) Routine environmental cleaning and disinfection
  15. What is a key factor in preventing healthcare-associated infections related to surgical procedures?
    a) Preoperative antibiotic prophylaxis
    b) Routine use of antiseptic hand washes
    c) Frequent patient repositioning
    d) Use of sterile glovesAnswer: a) Preoperative antibiotic prophylaxis

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