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Published on: June 4, 2012
Effectiveness of daptomycin against infective endocarditis caused by highly penicillin-resistant viridans group
Takahiro Matsuo1, Nobuyoshi Mori1, Aki Sakurai1
1Department of Infectious Diseases, St. Luke's International Hospital, Tokyo, Japan.
Abstract:
Penicillin-resistant viridans group streptococci (VGS) infections are an emerging issue in infectious diseases. Here, we present a case of mitral valve infective endocarditis caused by highly penicillin-resistant VGS (minimum inhibitory concentration >4 μg/mL), which was successfully treated with daptomycin. Although the clinical efficacy of daptomycin has not been established, it can be an alternative for the treatment of highly resistant VGS endocarditis.
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In the visual method, metal-ion indicators (metallochromic dyes), which have distinct colors in their free and complex forms, are added to the mixture to signal the titration's end point. They form stable complexes with metal ions, but these complexes are weaker than the corresponding metal–EDTA complexes. As a...

