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Critical Care
Published in: Critical Care 1/2016

Open Access 01-12-2016 | Research

Cerebrospinal fluid penetration of meropenem in neurocritical care patients with proven or suspected ventriculitis: a prospective observational study

Authors: Ute Blassmann, Anka C. Roehr, Otto R. Frey, Cornelia Vetter-Kerkhoff, Niklas Thon, William Hope, Josef Briegel, Volker Huge

Published in: Critical Care | Issue 1/2016

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Abstract

Background

Ventriculitis is a complication of temporary intraventricular drains. The limited penetration of meropenem into the cerebrospinal fluid (CSF) is well known. However, ventricular CSF pharmacokinetic data in patients with ventriculitis are lacking. The aim of this study was to evaluate meropenem pharmacokinetics in the serum and CSF of neurocritical care patients with proven or suspected ventriculitis.

Methods

We conducted an observational pharmacokinetic study of neurocritical care patients with proven or suspected ventriculitis receiving meropenem. Multiple blood and CSF samples were taken and were described using nonparametric pharmacokinetic modelling with Pmetrics.

Results

In total, 21 patients (median age 52 years, median weight 76 kg) were included. The median (range) of peak and trough concentrations in serum were 20.16 (4.40–69.00) mg/L and 2.54 (0.00–31.40) mg/L, respectively. The corresponding peak and trough concentrations in CSF were 1.20 (0.00–6.20) mg/L and 1.28 (0.00–4.10) mg/L, respectively, with a median CSF/serum ratio (range) of 0.09 (0.03–0.16). Median creatinine clearance ranged from 60.7 to 217.6 ml/minute (median 122.5 ml/minute). A three-compartment linear population pharmacokinetic model was most appropriate. No covariate relationships could be supported for any of the model parameters. Meropenem demonstrated poor penetration into CSF, with a median CSF/serum ratio of 9 % and high interindividual pharmacokinetic variability.

Conclusions

Administration of higher-than-standard doses of meropenem and therapeutic drug monitoring in both serum and CSF should be considered to individualise meropenem dosing in neurocritical care patients with ventriculitis.
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Metadata
Title
Cerebrospinal fluid penetration of meropenem in neurocritical care patients with proven or suspected ventriculitis: a prospective observational study
Authors
Ute Blassmann
Anka C. Roehr
Otto R. Frey
Cornelia Vetter-Kerkhoff
Niklas Thon
William Hope
Josef Briegel
Volker Huge
Publication date
01-12-2016
Publisher
BioMed Central
Published in
Critical Care / Issue 1/2016
Electronic ISSN: 1364-8535
DOI
https://doi.org/10.1186/s13054-016-1523-y

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