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Published on: July 24, 2021
Duration of antibiotic therapy in Gram-negative infections with a particular focus on multidrug-resistant pathogens
Sara F Haddad1, Fatima Allaw, Souha S Kanj
1Division of Infectious Diseases, American University of Beirut Medical Center, Beirut , Lebanon.
Purpose Of Review:
Antimicrobial overuse is a major health problem that contributes to antimicrobial resistance (AMR). Infections with Gram-negative bacilli (GNB) and multidrug-resistant organisms (MDRs) are associated with high morbidity and mortality, particularly in patients with underlying medical conditions.
Recent Findings:
Although many recent studies have been published about the novel antibiotics in treating infections including those due to MDR-GNB, the optimal duration of treatment (DOT) remains inconclusive. Recent observation has supported that short antibiotic therapy (SAT) decreases AMR and adverse effects. This narrative review provides an overview of the most recent published studies on the duration of therapy in the treatment of GNB infections, including hospital-acquired pneumonia (HAP) and ventilator-associated pneumonia (VAP), intra-abdominal infections (IAIs), bloodstream infections (BSIs) and urinary tract infections (UTIs), with a particular focus on MDR-GNB.
Summary:
Studies showed different outcomes when comparing SAT to long antimicrobial therapy (LAT). No generalization can be made on all sites of infections and different GNBs. Further studies are needed to address the optimal DOT in MDR-GNB, as this group is underrepresented in recent studies.
Insights
Short antibiotic therapy (SAT) may reduce antimicrobial resistance (AMR) and side effects for Gram-negative bacilli (GNB) infections. However, optimal treatment duration (DOT) for multidrug-resistant GNB infections requires further research.
Area of Science:
- Infectious Diseases
- Pharmacology
- Microbiology
Background:
- Antimicrobial overuse is a significant global health concern, driving antimicrobial resistance (AMR).
- Infections caused by Gram-negative bacilli (GNB), especially multidrug-resistant organisms (MDRs), lead to severe illness and fatalities, particularly in vulnerable patients.
- Optimal duration of treatment (DOT) for GNB infections is critical for effective management and combating resistance.
Conclusions:
- The optimal DOT for GNB infections is not definitively established and varies by infection type and pathogen.
- Short antibiotic therapy (SAT) shows promise in mitigating AMR and side effects.
- Further research is essential to determine the optimal DOT for multidrug-resistant GNB (MDR-GNB) infections.
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