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01-12-2020 | Amikacin | Research

Amikacin pharmacokinetic/pharmacodynamic in intensive care unit: a prospective database

Authors: Elsa Logre, Maya Enser, Sébastien Tanaka, Marie Dubert, Aurore Claudinon, Nathalie Grall, Hervé Mentec, Philippe Montravers, Olivier Pajot

Published in: Annals of Intensive Care | Issue 1/2020

Abstract

Background

Aminoglycosides have a concentration-dependent therapeutic effect when peak serum concentration (C_max) reaches eight to tenfold the minimal inhibitory concentration (MIC). With an amikacin MIC of 8 mg/L, the C_max should be 64–80 mg/L. This objective is based on clinical breakpoints and not on measured MIC. This study aimed to assess the proportion of patients achieving the pharmacokinetic/pharmacodynamic (PK/PD) target C_max/MIC ≥ 8 using the measured MIC in critically ill patients treated for documented Gram-negative bacilli (GNB) infections.

Methods

Retrospective analysis from February 2016 to December 2017 of a prospective database conducted in 2 intensive care units (ICU). All patients with documented severe GNB infections treated with amikacin (single daily dose of 25 mg/kg of total body weight (TBW)) with both MIC and C_max measurements at first day of treatment (D1) were included. Results are expressed in n (%) or median [min–max].

Results

93 patients with 98 GNB-documented infections were included. The median C_max was 55.2 mg/L [12.2–165.7] and the median MIC was 2 mg/L [0.19–16]. C_max/MIC ratio ≥ 8 was achieved in 87 patients (88.8%) while a C_max ≥ 64 mg/L was achieved in only 38 patients (38.7%). Overall probability of PK/PD target attainment was 93%. No correlation was found between C_max/MIC ratio and clinical outcome at D8 and D28.

Conclusion

According to PK/PD parameters observed in our study, single daily dose of amikacin 25 mg/kg of TBW appears to be sufficient in most critically ill patients treated for severe GNB infections.

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Title: Amikacin pharmacokinetic/pharmacodynamic in intensive care unit: a prospective database
Authors: Elsa Logre
Maya Enser
Sébastien Tanaka
Marie Dubert
Aurore Claudinon
Nathalie Grall
Hervé Mentec
Philippe Montravers
Olivier Pajot
Publication date: 01-12-2020
Publisher: Springer International Publishing
Keywords: Amikacin
Aminoglycoside
Care
Published in: Annals of Intensive Care / Issue 1/2020
Electronic ISSN: 2110-5820
DOI: https://doi.org/10.1186/s13613-020-00685-5

At a glance: The ONWARDS insulin icodec trials

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Amikacin pharmacokinetic/pharmacodynamic in intensive care unit: a prospective database

Abstract

Background

Methods

Results

Conclusion

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Abstract

Background

Methods

Results

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