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  • Title: Pharmacokinetics and safety of multiple doses of daptomycin 6 mg/kg in noninfected adults undergoing hemodialysis or continuous ambulatory peritoneal dialysis.
    Author: Benziger DP, Pertel PE, Donovan J, Yankelev S, Schwab RJ, Swan SK, Cannon C.
    Journal: Clin Nephrol; 2011 Jan; 75(1):63-9. PubMed ID: 21176752.
    Abstract:
    AIMS: The purpose of this study was to characterize the pharmacokinetics and tolerability of daptomycin in subjects undergoing hemodialysis (HD) or continuous ambulatory peritoneal dialysis (CAPD). METHOD: 16 noninfected adults on stable dialysis regimens were enrolled. Daptomycin 6 mg/kg was administered after HD during a 48 h - 48 h - 72 h dialysis week or before a CAPD dwell time over a 48 h - 48 h - 48 h dialysis week. Pharmacokinetic parameters were described, and adverse events were monitored. RESULTS: Daptomycin had mean half-lives in HD subjects of 28.0 and 35.9 h on Days 1 and 5, with corresponding values of 25.8 and 26.7 h in CAPD subjects. Steady state was reached by Day 5 in both groups. At steady state, HD subjects had a mean peak plasma concentration (Cmax) of 81.6 µg/ml and a mean trough concentration of 15.3 µg/ml (on Day 8). In CAPD subjects, Cmax was 93.9 µg/ml and the trough was 20.7 µg/ml (on Day 7). Adverse events were experienced by 71.4% and 66.7% of HD and CAPD subjects, respectively. Most of these were mild or moderate in intensity; however, 2 subjects experienced muscle spasms and mild creatine phosphokinase elevations although neither event was considered to be related to study drug. CONCLUSIONS: The pharmacokinetics of daptomycin 6 mg/kg support a dosing regimen of every 48 h in CAPD and thrice-weekly dosing in HD.
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