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  • Title: Continuous infusion of vancomycin in septic patients receiving continuous renal replacement therapy.
    Author: Covajes C, Scolletta S, Penaccini L, Ocampos-Martinez E, Abdelhadii A, Beumier M, Jacobs F, de Backer D, Vincent JL, Taccone FS.
    Journal: Int J Antimicrob Agents; 2013 Mar; 41(3):261-6. PubMed ID: 23312601.
    Abstract:
    Vancomycin is frequently administered as a continuous infusion to treat severe infections caused by Gram-positive bacteria. Previous studies have suggested a loading dose of 15 mg/kg followed by continuous infusion of 30 mg/kg in patients with normal renal function; however, there are no dosing recommendations in patients with renal failure undergoing continuous renal replacement therapy (CRRT). Data from all adult septic patients admitted to a Department of Intensive Care over a 3-year period in whom vancomycin was given as a continuous infusion were reviewed. Patients were included if they received vancomycin for ≥48h during CRRT. Vancomycin levels were obtained daily. During the study period, 85 patients (56 male; mean age 65±15 years; weight 85±24kg) met the inclusion criteria. Median (interquartile range) APACHE II and SOFA scores were 24 (20-29) and 11 (7-14), respectively, and the overall mortality rate was 59%. Mean vancomycin doses were 16.4±6.4 (loading dose), 23.5±8.1 (Day 1), 23.2±7.4 (Day 2) and 23.3±11.0 (Day 3) mg/kg, resulting in blood concentrations of 24.7±9.0 (Day 1), 26.0±8.1 (Day 2) and 27.7±9.3 (Day 3) μg/mL. On Day 1, 43 patients (51%) had adequate drug concentrations (20-30 μg/mL), 17 (20%) had levels >30 μg/mL and 25 (29%) had levels <20 μg/mL. Most patients with adequate drug concentrations received a daily dose of 16-35 mg/kg. The intensity of CRRT directly influenced vancomycin concentrations on Day 1 of therapy.
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