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Related Experiment Video

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High-throughput Fluorometric Measurement of Potential Soil Extracellular Enzyme Activities

High-throughput Fluorometric Measurement of Potential Soil Extracellular Enzyme Activities

Published on: November 15, 2013

[Not Available].

Laurent Bourguignon¹, Sylvain Goutelle¹, Cécile Gérard²

¹Université de Lyon 1, ÉcoleDoctorale E2M2 «Évolution, Écosystèmes, Microbiologie, Modélisation», UMR 5558, «Biométrie et Biologie Évolutive », Villeurbanne, France; Hospices Civils de Lyon, Hôpital Antoine Charial, Service Pharmacie, Francheville, France; ADCAPT, Hôpital Antoine Charial, Service Pharmacie, Francheville, France.

Therapie

|July 10, 2016

Summary

Standard amikacin dosing based solely on weight is often inappropriate due to significant pharmacokinetic variability in adults. This study reveals that weight-based calculations fail to ensure optimal amikacin dosing for most patients, highlighting risks of toxicity and underdosing.

Keywords:

amikacin amikacine calcul de dose drug dosage calculations pharmacocinétique pharmacokinetics

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High-throughput Fluorometric Measurement of Potential Soil Extracellular Enzyme Activities

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Published on: November 15, 2013

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Area of Science:

Pharmacology
Clinical Pharmacy
Drug Metabolism

Context:

Amikacin, an aminoglycoside antibiotic, is crucial for treating severe bacterial infections.
Its clinical use is hampered by significant pharmacokinetic variability and potential toxicity.
Current adult dosing regimens primarily rely on patient weight, often overlooking individual pharmacokinetic differences.

Purpose:

To investigate the pharmacokinetic homogeneity of amikacin in adult patients.
To evaluate the appropriateness of weight-based dosing calculations for amikacin.
To identify potential limitations in standard aminoglycoside dosing formulae.

Summary:

Population pharmacokinetic analysis of 580 patients revealed significant inter-individual variability in amikacin pharmacokinetics.
Patients were stratified into five groups based on statistical data partitioning, demonstrating non-homogeneity.
Dose adjustments required to reach a target maximum concentration (60mg/L) varied substantially (585mg to 1507mg) across these groups.
The study found that weight-based dosing is inappropriate for approximately 80% of adult patients, indicating flaws in current aminoglycoside dosing strategies.

Impact:

Highlights the inadequacy of weight-based dosing for amikacin in a large patient cohort.
Suggests a need for revised dosing strategies that account for individual pharmacokinetic variability.
Informs clinical practice regarding safer and more effective amikacin therapeutic drug monitoring.
Underscores the limitations of generalized formulae for aminoglycoside dose calculations.