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Updated: Aug 3, 2026

Microbiological Rapid On-Site Evaluation for Pulmonary Infectious Diseases
Published on: March 1, 2024
A holistic approach to MRSA eradication in critically ill patients with MRSA pneumonia
1Abteilung für Infektionen und Tropenmedizin, Kaiser-Franz-Josef-Spital, Kundratstrasse 3, 1100 Vienna, Austria. christoph.wenisch@wienkav.at
Background:
The number of Methicillin-resistant Staphylococcus aureus (MRSA) pneumonia cases is increasing in many European countries. In this observational study in one medical and three surgical ICUs multiple interventions for the treatment and eradication of nosocomial MRSA-pneumonia were used.
Patients And Methods:
Twenty-one critically ill patients (age: 59 +/- 14 years, 15 males/6 females, 18 ventilator-associated, 3 nosocomial, clinical pulmonary infection score > 6 in all patients, APACHE II 18 +/- 5) were enrolled. The patients were treated with a 7-day course of iv linezolid (600 mg bid) plus rifampicin (600 mg bid), endotracheal vancomycin 100 mg qid, thrice daily mouth and throat washing with chlorhexidine 1% fluid and nasal mupirocin ointment, twice daily skin and hair washings with chlorhexidine gluconate 4% and tracheostomy (n = 8) wound care with povidone-iodine spray. Control samples (endotracheal secretions, nose, wound, and pharyngeal swabs) were taken 2, 3, 4, 7 days and 2 months thereafter. Multilobular pneumonia was seen in 16, pleural effusion in 12, and MRSA bacteremia in 4 patients.
Results:
One patient died during the follow-up period due to cerebral bleeding. In the remaining 20 patients, pneumonia was clinically cured in all patients and all patients were free of MRSA after eradication. Six patients died due to myocardial infarction (n = 3), gram-negative septic shock (n = 2), herpes encephalitis (n = 1) > 7 days after eradication. No MRSA reinfection occurred during the control period.
Conclusion:
We conclude that in patients with MRSA pneumonia an approach using a 7-day course of intravenous linezolid plus rifampicin, intratracheal vancomycin, nasal mupirocin, cutaneous and oropharyngeal chlorhexidin plus povidone-iodine cures pneumonia and is effective for MRSA eradication.
Insights
This study shows a multi-intervention approach effectively cures Methicillin-resistant Staphylococcus aureus (MRSA) pneumonia and eradicates the bacteria. The treatment regimen led to successful MRSA clearance in critically ill patients.
Area of Science:
- Infectious Diseases
- Critical Care Medicine
- Pharmacology
Background:
- Increasing incidence of Methicillin-resistant Staphylococcus aureus (MRSA) pneumonia in European intensive care units (ICUs).
- Need for effective treatment and eradication strategies for nosocomial MRSA pneumonia.
Purpose of the Study:
- To evaluate the efficacy of a comprehensive treatment protocol for MRSA pneumonia.
- To assess the eradication rates of MRSA in critically ill patients.
Main Methods:
- Observational study involving 21 critically ill patients with MRSA pneumonia.
- Multi-intervention treatment: intravenous linezolid and rifampicin, endotracheal vancomycin, chlorhexidine, mupirocin, and povidone-iodine.
- Collection of control samples to monitor MRSA eradication over time.
Main Results:
- Clinical cure of pneumonia in all 20 surviving patients.
- Complete MRSA eradication achieved in all patients post-treatment.
- No MRSA reinfection observed during the follow-up period.
Conclusions:
- A 7-day course of intravenous linezolid plus rifampicin, combined with local antiseptics, is effective for MRSA pneumonia treatment.
- This multi-modal approach successfully eradicates MRSA, preventing reinfection.
- The regimen offers a promising strategy for managing MRSA pneumonia in intensive care settings.
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