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Antimicrob Agents Chemother. 2012 Nov;56(11):5990-3. doi: 10.1128/AAC.01046-12. Epub 2012 Aug 6.

Daptomycin-nonsusceptible vancomycin-intermediate staphylococcus aureus vertebral osteomyelitis cases complicated by bacteremia treated with high-dose daptomycin and trimethoprim-sulfamethoxazole.

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  • 1Wegman's School of Pharmacy, St. John Fisher College, Rochester, New York, USA.

Abstract

We report two cases of daptomycin (DAP)-nonsusceptible (DNS) vancomycin-intermediate Staphylococcus aureus (VISA) vertebral osteomyelitis cases complicated by bacteremia treated with high-dose daptomycin and trimethoprim-sulfamethoxazole. Both patients responded rapidly and favorably to this combination. The clinical isolates from the two patients were tested post hoc in an in vitro pharmacokinetic/pharmacodynamic (PK/PD) model to confirm the bactericidal activity and enhancement of daptomycin and trimethoprim-sulfamethoxazole. The combination of high-dose daptomycin and trimethoprim-sulfamethoxazole should be explored further for the treatment of DNS VISA strains.

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