"Bringing down the flag": removing the contact precautions label for non-hospitalized patients with prior...

Area of Science:

• Infectious Diseases
• Clinical Microbiology
• Healthcare Policy

Background:

• Methicillin-resistant Staphylococcus aureus (MRSA) is a significant healthcare-associated pathogen.
• Current policies on discontinuing contact precautions for patients with a history of MRSA lack consensus.
• Over-isolation of patients can lead to negative consequences, including increased healthcare costs and potential patient distress.

Purpose of the Study:

• To evaluate the prevalence of active MRSA carriage in outpatients previously flagged for MRSA.
• To assess the utility of a single nasal PCR test in predicting the absence of MRSA colonization.
• To inform policy decisions regarding the discontinuation of contact precautions for MRSA history patients.

Main Methods:

• Retrospective analysis of outpatient data.
• Collection of single nasal swab specimens for PCR testing.
• Calculation of negative predictive value for MRSA detection.

Main Results:

• Up to 72% of outpatients with a history of MRSA were found to be non-carriers.
• A single nasal PCR test demonstrated a reasonable negative predictive value for ruling out MRSA carriage.
• This suggests that many patients are on contact precautions unnecessarily.

Conclusions:

• Discontinuing contact precautions for MRSA history patients based on negative PCR testing is a viable strategy.
• Implementing evidence-based de-isolation protocols can optimize patient care and resource allocation.
• Further research may refine criteria for safe discontinuation of MRSA contact precautions.