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Updated: Aug 9, 2026

Multiplex Therapeutic Drug Monitoring by Isotope-dilution HPLC-MS/MS of Antibiotics in Critical Illnesses
Published on: August 30, 2018
Drug resistance in intensive care units
W C Albrich1, M Angstwurm, L Bader
1Medizinische Klinik, Klinikum Innenstadt der Ludwig-Maximilians-Universität, München.
Abstract:
Intensive care units (ICUs) are generally considered epicenters of antibiotic resistance and the principal sources of outbreaks of multi-resistant bacteria. The most important risk factors are obvious, such as excessive consumption of antibiotics exerting selective pressure on bacteria, the frequent use of invasive devices and relative density of a susceptible patient population with severe underlying diseases. Infections due to antibiotic-resistant bacteria have a major impact on morbidity and health-care costs. Increased mortality is not uniformly shown for all of these organisms: Methicillin-resistant Staphylococcus aureus (MRSA) seems to cause significantly higher mortality, in contrast to vancomycin-resistant enterococci (VRE). Therefore it is essential to diminish these potential risk factors, especially by providing locally adapted guidelines for the prudent use of antibiotic therapy. A quality control of antimicrobial therapy within a hospital, and especially within the ICU, might help to minimize the selection of multidrug-resistant bacteria. The restricted use of antimicrobial agents in prophylaxis and therapy has also been shown to have at least temporal effects on local resistance patterns. New approaches to the problem of drug resistance in ICUs are badly needed.
Insights
Intensive care units (ICUs) are hotspots for antibiotic resistance due to high antibiotic use and invasive devices. New strategies are crucial to combat multi-drug resistant bacteria in ICUs.
Area of Science:
- Critical care medicine
- Infectious diseases
- Microbiology
Background:
- Intensive care units (ICUs) are primary sources of antibiotic resistance and multi-resistant bacterial outbreaks.
- Key risk factors include excessive antibiotic consumption, frequent use of invasive devices, and a high density of susceptible patients with severe conditions.
- Antibiotic-resistant infections significantly increase morbidity and healthcare costs.
Purpose of the Study:
- To highlight the critical role of ICUs in antibiotic resistance.
- To emphasize the need for strategies to mitigate the spread of multi-drug resistant bacteria.
- To underscore the importance of antimicrobial stewardship in ICUs.
Main Methods:
- Review of risk factors contributing to antibiotic resistance in ICUs.
- Analysis of the impact of antibiotic-resistant bacteria on patient outcomes and healthcare costs.
- Discussion of current and potential approaches to control antimicrobial resistance.
Main Results:
- Methicillin-resistant Staphylococcus aureus (MRSA) is associated with significantly higher mortality compared to vancomycin-resistant enterococci (VRE).
- Prudent antibiotic use and quality control of antimicrobial therapy can help minimize the selection of multidrug-resistant bacteria.
- Restricted antimicrobial agent use shows temporal effects on local resistance patterns.
Conclusions:
- Implementing locally adapted guidelines for prudent antibiotic therapy is essential.
- Quality control of antimicrobial therapy in ICUs is vital for minimizing the selection of multidrug-resistant bacteria.
- Novel approaches are urgently needed to address the growing problem of drug resistance in ICUs.
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