In healthcare settings, which of the following is the most common type of nosocomial (healthcare-associated) infection?

• A. Urinary tract infection (often catheter-associated)
• B. Surgical site infection
• C. Ventilator-associated pneumonia
• D. Central line–associated bloodstream infection

Answer: (A)

Verified step by step guidance

1. Understand the term 'nosocomial infection,' which refers to infections acquired in healthcare settings, typically after 48 hours of admission, and not present or incubating at the time of admission.
2. Recognize the common types of nosocomial infections: urinary tract infections (often catheter-associated), surgical site infections, ventilator-associated pneumonia, and central line–associated bloodstream infections.
3. Recall epidemiological data and studies that identify the frequency of these infections in healthcare settings, noting that urinary tract infections are the most frequently reported nosocomial infections.
4. Consider why urinary tract infections are common: the use of urinary catheters provides a direct pathway for bacteria to enter the urinary tract, increasing infection risk.
5. Conclude that among the options given, urinary tract infections (often catheter-associated) are the most common type of nosocomial infection in healthcare settings.