Journal
BLOOD PURIFICATION
Volume 24, Issue 5-6, Pages 548-554Publisher
KARGER
DOI: 10.1159/000097078
Keywords
daptomycin; continuous renal replacement therapy; continuous hemofiltration; continuous hemodialysis; acute renal failure; pharmacokinetics
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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. Copyright (c) 2006 S. Karger AG, Basel.
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