The Journal of infection · 2005
Treatment of prosthetic valve infective endocarditis due to multi-resistant Gram-positive bacteria with linezolid.
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Wareham D W, Abbas H, Karcher A M, Das S S
Аннотация
OBJECTIVES: Clinical experience with linezolid in the treatment of infective endocarditis either alone or in combination with other agents is limited. We describe our experience in the treatment of two patients with IE due to multi-resistant Gram-positive bacteria.
METHODS: One patient with MRSE and one with VRE endocarditis were treated with regimens containing linezolid. The killing kinetics of linezolid in combination with gentamicin or vancomycin against isolates of Staphylococcus epidermidis and Enterococcus faecalis were analysed in vitro.
RESULTS: Clinical response and eradication of bacteraemia was achieved with linezolid therapy in both patients. Time-kill curve studies showed that linezolid was bacteriostatic against the MRSE and VRE isolates used. Combination with gentamicin or vancomycin did not produce synergy or antagonism but at best only marginal additive effect.
CONCLUSIONS: Although bacteriostatic, linezolid provides an important therapeutic option in IE due to multi-resistant Gram-positive pathogens. It challenges the conventional wisdom that bactericidal synergy is required for the effective treatment of most cases of IE due to Gram-positive organisms.
METHODS: One patient with MRSE and one with VRE endocarditis were treated with regimens containing linezolid. The killing kinetics of linezolid in combination with gentamicin or vancomycin against isolates of Staphylococcus epidermidis and Enterococcus faecalis were analysed in vitro.
RESULTS: Clinical response and eradication of bacteraemia was achieved with linezolid therapy in both patients. Time-kill curve studies showed that linezolid was bacteriostatic against the MRSE and VRE isolates used. Combination with gentamicin or vancomycin did not produce synergy or antagonism but at best only marginal additive effect.
CONCLUSIONS: Although bacteriostatic, linezolid provides an important therapeutic option in IE due to multi-resistant Gram-positive pathogens. It challenges the conventional wisdom that bactericidal synergy is required for the effective treatment of most cases of IE due to Gram-positive organisms.
Предметные рубрики MeSH
AcetamidesAgedAnti-Infective AgentsDrug Resistance, Multiple, BacterialDrug Therapy, CombinationElectrophoresis, Gel, Pulsed-FieldEndocarditis, BacterialEnterococcus faecalisFemaleGentamicinsGram-Positive Bacterial InfectionsHeart Valve ProsthesisHumansLinezolidMethicillin ResistanceMicrobial Sensitivity TestsMiddle AgedOxazolidinonesProsthesis-Related InfectionsStaphylococcal InfectionsStaphylococcus epidermidisTreatment OutcomeVancomycin Resistance