Decrease in Staphylococcus aureus colonization and hospital-acquired infection in a medical intensive care unit after...

Area of Science:

• Infectious Diseases
• Critical Care Medicine
• Public Health

Background:

• Healthcare-associated infections (HAIs) pose a significant threat in intensive care units (ICUs).
• Staphylococcus aureus (S. aureus) is a common pathogen responsible for HAIs.
• Active surveillance and decolonization protocols are strategies to mitigate S. aureus transmission.

Discussion:

• A retrospective quasi-experimental study evaluated an active surveillance program for S. aureus nasal carriage coupled with a decolonization protocol in an 18-bed medical ICU.
• The intervention involved S. aureus screening, with carriers receiving intranasal mupirocin and chlorhexidine gluconate baths.
• The study compared outcomes during a preintervention surveillance-only period with an intervention period.

Key Insights:

• The incidence of S. aureus colonization decreased significantly from 6.28 to 3.32 cases per 1,000 patient-days (P=.04).
• A notable reduction in S. aureus ventilator-associated pneumonia was observed (P=.03).
• The overall incidence of S. aureus hospital-acquired infections decreased by 63% (P=.03).

Outlook:

• Implementing active surveillance and decolonization can be an effective strategy to reduce S. aureus burden in ICUs.
• Further research could explore long-term effects and cost-effectiveness of such programs.
• This approach may be adaptable to other healthcare settings and pathogens.