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Updated: Jun 2, 2026

Replication of the Ordered, Nonredundant Library of Pseudomonas aeruginosa strain PA14 Transposon Insertion Mutants
Published on: May 4, 2018
[Risk factors for Pseudomonas aeruginosa infections, resistant to carbapenem]
Laura Ghibu1, Egidia Miftode, Andra Teodor
1Facultatea de Medicină, Clinica de Boli Infecţioase, Universitatea de Medicină si Farmacie Gr.T. Popa Iaşi.
Unlabelled:
Since their introduction in clinical practice,carbapenems have been among the most powerful antibiotics for treating serious infections cased by Gram-negative nosocomial pathogens, including Pseudomonas aeruginosa. The emergence of betalactamases with carbapenem-hydrolyzing activity is of major clinical concern. Pseudomonas aeruginosa is a leading cause of nosocomial infection.
Results:
Risk factors for colonization with carbapenems-resistant Pseudomonas in hospital are: history of P. aeruginosa infection or colonization within the previous year, (length of hospital stay, being bedridden or in the ICU, mechanical ventilation, malignant disease, and history of chronic obstructive pulmonary disease have all been identified as independent risk factors for MDR P. aeruginosa infection. Long-term-care facilities are also reservoirs of resistant bacteria. Risk factors for colonization of LTCF residents with resistant bacteria included age > 86 years, antibiotic treatment in the previous 3 months, indwelling devices, chronic obstructive pulmonary disease, physical disability, and the particular LTCF unit.
Insights
Carbapenem-resistant Pseudomonas aeruginosa infections are a growing concern. Identifying risk factors for colonization in hospitals and long-term care facilities is crucial for infection control.
Area of Science:
- Infectious Diseases
- Microbiology
- Antimicrobial Resistance
Background:
- Carbapenems are vital antibiotics against Gram-negative pathogens like Pseudomonas aeruginosa.
- The rise of carbapenem-hydrolyzing beta-lactamases poses a significant clinical challenge.
- Pseudomonas aeruginosa is a primary cause of hospital-acquired infections.
Purpose of the Study:
- To identify risk factors for carbapenem-resistant Pseudomonas aeruginosa colonization in hospital settings.
- To determine risk factors for colonization among residents in long-term care facilities (LTCFs).
Main Methods:
- Review of existing literature and clinical data.
- Analysis of patient and facility-specific factors associated with resistant P. aeruginosa.
Main Results:
- Hospital risk factors include prior P. aeruginosa infection/colonization, prolonged stay, bedridden status, ICU admission, mechanical ventilation, malignancy, and COPD.
- LTCF risk factors include advanced age, recent antibiotic use, indwelling devices, COPD, physical disability, and specific unit characteristics.
Conclusions:
- Understanding these risk factors is essential for targeted prevention strategies.
- Interventions should focus on high-risk patients and healthcare settings to mitigate the spread of carbapenem-resistant P. aeruginosa.
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