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Updated: Sep 28, 2025

Multiplex Therapeutic Drug Monitoring by Isotope-dilution HPLC-MS/MS of Antibiotics in Critical Illnesses
Published on: August 30, 2018
Personalized antimicrobial therapy in critical and elderly patients
Santiago Grau1, Marta De Antonio-Cuscó2, Sara Ortonobes-Roig3
1Pharmacy Department, Hospital del Mar, Barcelona. Spain. Universitat Autònoma de Barcelona, Barcelona. Spain.. sgrau@psmar.cat.
Personalized antimicrobial therapy optimizes drug levels, reducing bacterial resistance and improving safety. Pharmacokinetic models and alternative administration routes, like inhalation, are crucial for new antimicrobials, especially in geriatric and critical care patients.
Area of Science:
- Pharmacology
- Infectious Diseases
- Critical Care Medicine
Background:
- Personalized therapy is essential for optimizing antimicrobial drug levels to combat infections.
- Understanding drug activity and employing alternative administration routes, such as inhalation, are key to managing new antimicrobials.
- Pharmacokinetic models aid in tailoring antimicrobial treatments, crucial due to the limited activity of novel agents.
Purpose of the Study:
- To review literature on personalized antimicrobial therapy, focusing on optimizing drug levels and administration routes.
- To explore the role of pharmacokinetic models and alternative administration routes in managing infections.
- To address challenges in antimicrobial treatment for geriatric and critical care populations.
Main Methods:
- A non-systematic literature review was conducted.
- A search for high-quality research articles on antimicrobial therapy was performed.
- A selection process involving clinical pharmacists and an intensivist identified 153 relevant articles from an initial 370.
Main Results:
- Geriatric and critical care patients require close antimicrobial monitoring.
- Inhaled administration can lead to high plasma concentrations, particularly in respiratory infections.
- Pharmacokinetic models are valuable for treating geriatric patients, who are often excluded from clinical trials.
Conclusions:
- Personalized antimicrobial therapy is vital for optimizing drug levels, reducing resistance, and enhancing safety.
- Pharmacokinetic modeling and alternative administration routes are essential for effective antimicrobial treatment.
- Special consideration and monitoring are necessary for geriatric and critical care patients receiving antimicrobials.
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