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Appropriate use of antimicrobial agents: challenges and strategies for improvement
1Pulmonary and Critical Care Medicine, Winthrop University Hospital, Mineola, NY, USA.
Abstract:
The use of inadequate empirical antimicrobial therapy is common in intensive care unit patients and contributes to a number of poor outcomes. Selecting appropriate antimicrobial therapy is complicated by many factors, including the large number of agents available, the presence of resistant organisms, and the general desire among practitioners to use the most focused therapy available. An important aspect of appropriate antimicrobial use is prompt initiation of adequate empirical therapy, which has been shown to improve mortality rates in hospitalized patients with pneumonia and other serious infections. Other key strategies include streamlining antimicrobial therapy when a pathogen is identified and switching from intravenous to oral therapy when clinically indicated. In addition, antibiotic rotation (or cycling) has been evaluated in several trials as a means to minimize resistance. Promoting appropriate antimicrobial therapy ultimately will require a multidisciplinary, system-oriented, institution-specific approach because each intensive care unit has its own unique flora and antimicrobial resistance patterns.
Insights
Inadequate antimicrobial therapy in intensive care units (ICUs) leads to poor outcomes. Prompt, appropriate antibiotic use, including streamlining and oral conversion, improves patient survival and combats resistance.
Area of Science:
- Infectious Diseases
- Critical Care Medicine
- Pharmacology
Background:
- Inadequate empirical antimicrobial therapy is prevalent in intensive care units (ICUs).
- This contributes to adverse patient outcomes and complicates treatment selection due to drug resistance and numerous available agents.
- Prompt initiation of effective empirical therapy is crucial for improving survival rates in severe infections.
Purpose of the Study:
- To highlight the importance of appropriate antimicrobial therapy in ICUs.
- To discuss strategies for optimizing antibiotic use, including prompt initiation, streamlining, and route conversion.
- To emphasize the need for institution-specific approaches to combat antimicrobial resistance.
Main Methods:
- Review of existing literature and clinical trial data on antimicrobial therapy in ICUs.
- Analysis of factors influencing antimicrobial selection and resistance.
- Discussion of strategies such as antibiotic rotation and de-escalation.
Main Results:
- Inadequate empirical therapy is common and linked to poor outcomes in ICU patients.
- Timely, appropriate antimicrobial administration improves mortality in serious infections like pneumonia.
- Strategies like streamlining, IV-to-oral switch, and antibiotic cycling can optimize therapy and minimize resistance.
Conclusions:
- Optimizing antimicrobial therapy in ICUs requires a multifaceted approach.
- Prompt, adequate empirical treatment, followed by de-escalation and appropriate route selection, is key.
- Institution-specific strategies are necessary due to unique resistance patterns in each ICU.