• Minerva anestesiologica · Mar 2016

    Continuous vs. intermittent vancomycin therapy for Gram-positive infections not caused by methicillin-resistant Staphylococcus Aureus.

    • Wieslawa Duszynska, Fabio S Taccone, Magdalena Hurkacz, Anna Wiela-Hojenska, and Andrzej Kübler.
    • Department of Anesthesiology and Intensive Care, Wroclaw Medical University, Wroclaw, Poland - w.duszynska@wp.pl.
    • Minerva Anestesiol. 2016 Mar 1; 82 (3): 284-93.

    BackgroundThe aim of this study was to evaluate the effects of vancomycin pharmacokinetics (PKs) on effectiveness and safety in the treatment of Gram-positive infections due to pathogens other than methicillin-resistant Staphylococcus aureus (MRSA).MethodsProspective study including septic patients received either continuous (N.=21) or intermittent (N.=21) infusions of vancomycin; the target drug concentration was 15-20 mg/L and target area under the curve of vancomycin concentrations over the minimum inhibitory concentration of the pathogen on day 1 (AUC24/MIC) >400. Clinical and microbiological responses, the development of acute kidney injury (AKI) and therapy costs were recorded.ResultsThe median AUC24/MIC was 195(133-343) vs. 189(136-328) mg/L*h in the continuous and intermittent infusion groups. Target drug concentrations were achieved in 15/21 vs. 9/21 (P=0.12) patients and AUC24/MIC>400 in only 5/21 vs. 3/21 (P=0.35) patients of continuous and intermittent groups, respectively. High clinical cure (17/21 for continuous vs. 17/21 for intermittent, P=1.00) and microbiological eradication (17/21 vs. 15/21, P=0.47) were observed in both groups and not associated with drug concentrations or with AUC24/MIC. AKI was diagnosed during therapy in 5/21 patients in the continuous group and 8/21 in the intermittent group (P=0.32). The median total therapy costs were lower in the continuous than in the intermittent group (377 [304-485] vs. 552 [371-644] €, P=0.04).ConclusionsVancomycin resulted in high clinical response during non-MRSA Gram-positive infections treatment even at drug concentrations lower than those for MRSA. A continuous infusion of vancomycin was associated with a significant reduction in therapy costs compared to intermittent infusions.

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