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Published on: July 24, 2021
Antibiotic strategies in the era of multidrug resistance
George Karam1, Jean Chastre2, Mark H Wilcox3
1Infectious Disease Section, Louisiana State University School of Medicine, New Orleans, LA, 70112, USA.
Abstract:
The rapid emergence and dissemination of antibiotic-resistant microorganisms in ICUs worldwide threaten adequate antibiotic coverage of infected patients in this environment. The causes of this problem are multifactorial, but the core issues are clear: the emergence of antibiotic resistance is highly correlated with selective pressure resulting from inappropriate use of these drugs. Because a significant increase in mortality is observed when antibiotic therapy is delayed in infected ICU patients, initial therapy should be broad enough to cover all likely pathogens. Receipt of unnecessary prolonged broad-spectrum antibiotics, however, should be avoided. Local microbiologic data are extremely important to predict the type of resistance that may be present for specific causative bacteria, as is prior antibiotic exposure, and antibiotic choices should thus be made at an individual patient level.
Insights
Antibiotic resistance in intensive care units (ICUs) is a growing threat. Tailoring antibiotic selection based on local data and individual patient history is crucial for effective treatment and preventing further resistance.
Area of Science:
- Infectious Diseases
- Critical Care Medicine
- Microbiology
Background:
- Antibiotic-resistant microorganisms are rapidly emerging in intensive care units (ICUs) globally.
- This resistance poses a significant threat to effective antibiotic treatment for infected patients.
Purpose of the Study:
- To highlight the correlation between antibiotic use and resistance.
- To emphasize the importance of appropriate antibiotic selection in ICUs.
Main Methods:
- Analysis of factors contributing to antibiotic resistance in ICUs.
- Review of clinical outcomes related to antibiotic therapy timing and spectrum.
Main Results:
- Antibiotic resistance is strongly linked to the selective pressure from inappropriate antibiotic use.
- Delayed antibiotic therapy in infected ICU patients is associated with increased mortality.
Conclusions:
- Initial broad-spectrum antibiotic therapy is necessary for likely pathogens in ICUs.
- Avoidance of prolonged, unnecessary broad-spectrum antibiotics is critical.
- Individualized antibiotic choices, informed by local resistance data and patient history, are essential.
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