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Published on: February 23, 2014
Clinical impact of antibiotic resistance in respiratory tract infections
1Hubert Department of Global Health, Rollins School of Public Health, and Division of Infectious Diseases, School of Medicine, Emory University, Atlanta, GA 30322, USA. keith.klugman@emory.edu
Abstract:
Streptococcus pneumoniae is the most common causative pathogen of community-acquired respiratory tract infections. In vitro evidence indicates that S. pneumoniae is increasingly resistant to commonly prescribed antimicrobial agents including the macrolides. The clinical relevance of resistance, however, has not been clearly established. This article reviews the risk factors influencing selection of resistant pneumococci, discusses endpoints used to assess the impact of resistance on clinical outcome, and proposes strategies to minimise the impact of resistance. Evidence demonstrating treatment failures due to macrolide-resistant S. pneumoniae is also reviewed. Increasing rates of resistance among S. pneumoniae present numerous clinical challenges, and require carefully selected treatment strategies to preserve antibacterial efficacy. Antibiotics with a low propensity for stimulating resistance should be chosen wherever possible.
Insights
Increasing antimicrobial resistance in Streptococcus pneumoniae poses a clinical challenge. This review examines factors, outcomes, and strategies to manage macrolide-resistant pneumococci infections effectively.
Area of Science:
- Microbiology
- Infectious Diseases
- Pharmacology
Background:
- Streptococcus pneumoniae is a leading cause of community-acquired respiratory infections.
- In vitro data show increasing resistance of S. pneumoniae to macrolide antibiotics.
- The clinical significance of this macrolide resistance remains under-evaluated.
Purpose of the Study:
- To review risk factors for selecting resistant pneumococci.
- To discuss clinical outcome assessment endpoints for antimicrobial resistance.
- To propose strategies for minimizing the impact of S. pneumoniae resistance.
Main Methods:
- Literature review of risk factors for resistant pneumococci selection.
- Analysis of clinical outcome assessment endpoints.
- Review of evidence for treatment failures caused by macrolide-resistant S. pneumoniae.
- Synthesis of strategies to preserve antibacterial efficacy.
Main Results:
- In vitro resistance of S. pneumoniae to macrolides is rising.
- Clinical relevance of this resistance requires further clarification.
- Treatment failures linked to macrolide-resistant S. pneumoniae have been documented.
- Risk factors for selecting resistant strains are identifiable.
Conclusions:
- Rising S. pneumoniae resistance presents significant clinical challenges.
- Careful selection of antimicrobial agents is crucial to maintain treatment efficacy.
- Prioritizing antibiotics with a low propensity for resistance development is recommended.
- Strategies to minimize the impact of resistance are necessary for effective patient management.
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