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  • Title: Daptomycin clearance during modeled continuous renal replacement therapy.
    Author: Churchwell MD, Pasko DA, Mueller BA.
    Journal: Blood Purif; 2006; 24(5-6):548-54. PubMed ID: 17124423.
    Abstract:
    BACKGROUND/AIMS: Pharmacotherapy in critically ill patients receiving continuous renal replacement therapies (CRRT) is challenging due to the lack of published information to base dosing regimens. METHODS: Daptomycin's transmembrane clearance during continuous hemofiltration and hemodialysis was assessed using an in vitro model with AN69 and polysulfone hemodiafilters at varying ultrafiltrate and dialysate flow rates (1, 2, 3 and 6 l/h). RESULTS: During continuous hemofiltration, mean daptomycin sieving coefficient ranged from 0.14 to 0.20. Transmembrane clearances were significantly different between filter types for ultrafiltration rates of 2, 3 and 6 l/h. For continuous hemodialysis, mean daptomycin saturation coefficient ranged from 0.05 to 0.15. AN69-based daptomycin clearances were significantly lower than polysulfone values at dialysate flow rates of 2, 3 and 6 l/h. CONCLUSION: The extent of daptomycin's transmembrane clearance is dependent on hemodiafilter type, dialysate and ultrafiltration rates. CRRT with high ultrafiltrate or dialysate rates may result in substantial daptomycin clearances.
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