• Antimicrob. Agents Chemother. · Nov 2001

    Clinical Trial

    Pharmacokinetics of cefepime during continuous renal replacement therapy in critically ill patients.

    • R S Malone, D N Fish, E Abraham, and I Teitelbaum.
    • Department of Pharmacy Practice and Science, University of Arizona Health Sciences Center, Tucson, Arizona, USA.
    • Antimicrob. Agents Chemother. 2001 Nov 1;45(11):3148-55.

    AbstractThe pharmacokinetics of cefepime were studied in 12 adult patients in intensive care units during continuous venovenous hemofiltration (CVVH) or continuous venovenous hemodiafiltration (CVVHDF) with a Multiflow60 AN69HF 0.60-m(2) polyacrylonitrile hollow-fiber membrane (Hospal Industrie, Meyzieu, France). Patients (mean age, 52.0 +/- 13.0 years [standard deviation]; mean weight, 96.7 +/- 18.4 kg) received 1 or 2 g of cefepime every 12 or 24 h (total daily doses of 1 to 4 g/day) by intravenous infusion over 15 to 30 min. Pre- and postmembrane blood (serum) samples and corresponding ultrafiltrate or dialysate samples were collected 1, 2, 4, 8, and 12 or 24 h (depending on dosing interval) after completion of the drug infusion. Drug concentrations were measured using validated high-performance liquid chromatography methods. Mean systemic clearance (CL(S)) and elimination half-life (t(1/2)) of cefepime were 35.9 +/- 6.0 ml/min and 12.9 +/- 2.6 h during CVVH versus 46.8 +/- 12.4 ml/min and 8.6 +/- 1.4 h during CVVHDF, respectively. Cefepime clearance was substantially increased during both CVVH and CVVHDF, with membrane clearance representing 40 and 59% of CL(S), respectively. The results of this study confirm that continuous renal replacement therapy contributes substantially to total CL(S) of cefepime and that CVVHDF appears to remove cefepime more efficiently than CVVH. Cefepime doses of 2 g/day (either 2 g once daily or 1 g twice daily) appear to achieve concentrations adequate to treat most common gram-negative pathogens (MIC

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