Can Daptomycin Have An Impact With Skin And Skin Structure Infections?

By Gerard Guerin, DPM, CWS

In regard to patients who receive daptomycin, one should monitor for the development of muscle pain and weakness, and also test creatinine phosphokinase (CPK) levels weekly or more often if necessary.11 However, elevations in CPK levels were comparable between daptomycin and comparator groups in the aforementioned complicated SSSI trials, and only two of 534 patients receiving daptomycin developed CPK levels that necessitated discontinuation of the drug.15

Final Notes
The approved dose of daptomycin for complicated SSSI is 4 mg/kg once a day by intravenous infusion for seven to 14 days. When it comes to patients with insufficient renal function, the dosing should be once every 48 hours.11 Since many foot infections are caused or complicated by diabetes, parenteral therapy is often necessary at least initially.1,2

Since daptomycin is dosed once daily, it is a suitable modality for outpatient parenteral therapy. One study found that daptomycin is safe to use in a hospital-based outpatient setting. This provided the opportunity for patients to receive professional wound care in addition to drug administration.20

In summary, daptomycin has potent bactericidal activity against gram-positive bacteria, including MRSA. Given the currently available studies, it appears that this new antibiotic may provide a useful option for treating many skin infections of the foot.

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