Antibiotic resistance of bacterial ventilator-associated pneumonia in surgical intensive care units
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Published on: February 23, 2014
M Namiduru1, G Güngör, I Karaoğlan
1Department of Infectious Diseases, Medical Faculty, Gaziantep University, Gaziantep, Turkey.
Abstract:
Ventilator-associated pneumonia (VAP) is the most common infection in intensive care units. It is caused by prolonged hospitalization and results in high mortality rates. This retrospective clinical study, of 140 patients in a surgical intensive care unit, aimed to identify the bacterial agents responsible for VAP infection, and determine antibiotic resistance rates in VAP. Antibiotic sensitivity was evaluated by culturing and testing tracheal aspirates from patients with clinical and radiological findings of VAP. The bacteria isolated most frequently were Pseudomonas aeruginosa (33.9%), Staphylococcus aureus (30.0%), Acinetobacter baumannii (26.1%), and Enterobacter species (4.3%). A. baumannii was more prevalent than in previous years. The results of antibiotic sensitivity testing suggested sulbactam/cefoperazone as the most appropriate drug for treating these patients. We suggest, however, that when staphylococcal pneumonia is suspected, a glycopeptide (vancomycin or teicoplanin) or combined trimethoprim-sulfamethoxazole is used as first-line therapy until sensitivity results are obtained. In conclusion, development of antibiotic policies for individual hospitals can reduce high antibiotic resistance rates due to VAP.
Insights
Ventilator-associated pneumonia (VAP) is a common ICU infection. This study identified key bacteria and antibiotic resistance, suggesting targeted therapies and hospital antibiotic policies to combat VAP.
Area of Science:
- Critical Care Medicine
- Infectious Diseases
- Clinical Microbiology
Background:
- Ventilator-associated pneumonia (VAP) is the most frequent intensive care unit (ICU) infection.
- VAP is associated with prolonged hospitalization and high mortality rates.
- Understanding causative pathogens and antibiotic resistance is crucial for effective VAP management.
Purpose of the Study:
- To identify the primary bacterial agents responsible for VAP in a surgical ICU.
- To determine the antibiotic resistance patterns of these VAP-causing bacteria.
- To inform optimal antibiotic treatment strategies for VAP.
Main Methods:
- Retrospective clinical study of 140 patients in a surgical ICU.
- Bacterial identification through culturing tracheal aspirates from patients with VAP.
- Antibiotic sensitivity testing performed on isolated bacterial strains.
Main Results:
- The most frequent isolates were Pseudomonas aeruginosa (33.9%), Staphylococcus aureus (30.0%), and Acinetobacter baumannii (26.1%).
- Acinetobacter baumannii showed increased prevalence compared to previous years.
- Sulbactam/cefoperazone demonstrated effectiveness, with specific recommendations for staphylococcal pneumonia.
Conclusions:
- Hospital-specific antibiotic policies are essential for reducing VAP-related antibiotic resistance.
- Targeted antibiotic selection based on local resistance patterns can improve VAP treatment outcomes.
- Prompt identification of pathogens and resistance is key to managing VAP effectively.
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