Methicillin-resistant Staphylococcus aureus in hip fracture

Area of Science:

• Orthopedic Surgery
• Infectious Disease Epidemiology
• Public Health Interventions

Background:

• Hip fracture patients face high risks of methicillin-resistant Staphylococcus aureus (MRSA) colonization and surgical site infections (SSIs).
• Surgical site infections increase treatment costs and mortality rates.

Purpose of the Study:

• To evaluate the impact of routine MRSA screening and the "cleanyourhands" campaign on MRSA SSI rates.
• To assess the effect of these interventions on patient outcomes, including mortality and overall SSI rates.

Main Methods:

• Analysis of 13,503 hip fracture patients over 17 years, comparing pre- and post-screening cohorts.
• Multivariable logistic regression and Autoregressive Integrated Moving Average (ARIMA) modeling to identify risk factors and temporal trends.
• Kaplan-Meier estimators used to assess changes in mortality.

Main Results:

• MRSA SSIs decreased significantly from 69 to 15 cases post-screening (p < 0.001).
• Routine screening reduced MRSA SSIs, while the "cleanyourhands" campaign showed no significant impact on MRSA SSIs (p = 0.121).
• Overall SSI rates decreased, but deep SSI rates slightly increased; neither intervention significantly impacted overall SSI rates.

Conclusions:

• Routine MRSA screening may reduce MRSA-associated SSIs, but its benefit on overall patient outcomes requires further investigation.
• Deep surgical site infections remain a persistent challenge in hip fracture care.
• Continued focus on preventing all hospital-associated infections is crucial alongside MRSA-specific strategies.