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  • Title: Linezolid as salvage therapy for central nervous system infections due to methicillin-resistant Staphylococcus aureus at two medical centers in Taiwan.
    Author: Chen HA, Yang CJ, Tsai MS, Liao CH, Lee CH.
    Journal: J Microbiol Immunol Infect; 2020 Dec; 53(6):909-915. PubMed ID: 32859532.
    Abstract:
    BACKGROUND: Methicillin-resistant Staphylococcus aureus (MRSA)-associated central nervous system infections are potentially devastating. Linezolid has good penetration into cerebrospinal fluid and brain tissue. In clinical practice, linezolid may be used to treat central nervous system infections caused by MRSA resulting from glycopeptide intolerance or treatment failure. However, the clinical experience of linezolid in treating MRSA related central nervous system infections is scarce. METHODS: From 2006 to 2016, patients aged ≥20 years who had central nervous system infections caused by MRSA treated with linezolid for more than 24 hours were retrospectively included from two medical centers. The demographic details, treatment response, side effects, and relapse of infection were reviewed. RESULTS: Sixty-six patients with proven CNS infection caused by MRSA were treated with linezolid. The mean age was 53.3 years. The diagnoses in this cohort consisted of brain abscesses (n = 19, 28.8%), spinal epidural abscess (n = 18, 27.3%), meningitis only (n = 12, 18.2%), meningitis with brain epidural abscess (n = 9, 13.6%), and spine device-related infection (n = 5, 7.6%). The main reasons to prescribe linezolid were glycopeptide treatment failure (51.5%) and glycopeptide allergy (48.5%). Ninety-one percent of patients were treated with linezolid for more than 14 days. The in-hospital mortality rate was 13.6%. The relapse rate after treatment was 16.7%. Drug-related adverse events (mainly cytopenia) were observed in 27.3% of patients, but none of the adverse events was fatal. CONCLUSIONS: In our retrospective study, linezolid demonstrated promising effect as a salvage therapy for central nervous system infection caused by MRSA, whether due to drug allergy or glycopeptide treatment failure.
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