According to epidemiological data, what is the most common type of nosocomial infection reported in hospitals?

NORCET 1 - 2020

Applied Microbiology & Infection control (E5)

Easy

Appeared in: NORCET 1 - 2020

Explanation

Urinary Tract Infection (UTI) is consistently reported as the most frequent type of hospital-acquired infection (HAI).
The primary driver for this high prevalence is the widespread use of indwelling urinary catheters.
Approximately 80% of nosocomial UTIs are directly linked to catheter use, a condition known as Catheter-Associated UTI (CAUTI).
Common pathogens include E. coli from the patient's own flora and multi-drug resistant organisms acquired in the hospital environment.
While other HAIs are serious, UTIs occur in the greatest numbers.

Option A: Surgical site infections (SSIs) are the second most common type of HAI but are less frequent overall than UTIs.
Option C: Hospital-acquired pneumonia (HAP), including ventilator-associated pneumonia (VAP), is a major cause of morbidity and mortality but is not the most common HAI by incidence.
Option D: Bloodstream infections (BSIs), including central line-associated bloodstream infections (CLABSIs), are severe but occur less frequently than UTIs, SSIs, or HAP.

Visual 1: Pie Chart - A chart illustrating the percentage distribution of common nosocomial infections (UTI, SSI, HAP, BSI) to visually emphasize that UTI has the largest share.
Visual 2: Infographic - An infographic detailing the key steps of the CAUTI prevention bundle, such as aseptic insertion, daily assessment of need, and maintaining a closed drainage system.

Clinical Relevance

Nursing practice connection: Knowing Epidemiology of Hospital-Acquired Infections (HAIs) helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
Nurses are at the forefront of preventing HAIs. Adherence to infection control protocols, especially for invasive procedures like catheterization, is a core nursing responsibility.
Recognizing the high risk associated with urinary catheters, nurses must be vigilant in assessing the ongoing need for a catheter and advocating for its prompt removal to minimize CAUTI risk.
What if? If a patient with an indwelling catheter develops a fever and confusion, the nurse's first action should be to suspect a CAUTI, assess the patient, and report the findings to the physician, as this could be the first sign of urosepsis.

How to Approach the Question

First, identify the core of the question. The keywords are 'most common' and 'nosocomial infection'. This is a factual recall question based on epidemiology.
Recall or look up the relative prevalence of the four main types of hospital-acquired infections: UTIs, surgical site infections, pneumonia, and bloodstream infections.
Compare the options. Remember that while some infections like pneumonia may be more deadly, the question asks for the most frequent or common.
Select the option that accounts for the highest percentage of all HAIs. Epidemiological data consistently shows UTIs as the most prevalent.
Confirm the link between UTIs and catheter use (CAUTI), as this is the primary reason for their high frequency in hospitals.

Concept Tested & Keywords

Concept Tested: Epidemiology of Hospital-Acquired Infections (HAIs)
Stem keywords: epidemiological data, most common, nosocomial infection, hospitals
Lead-in keywords: what is

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