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Published on: April 18, 2019
[Imipenem resistance in Gram-negative rods and its consumption between 1999 and 2005]
Eugenia Gospodarek1, Krzysztof Gierlotka, Aleksander Deptuła
1Katedra i Zakład Mikrobiologii, Collegium Medicum im. L. Rydygiera w Bydgoszczy, Uniwersytet Mikołaja Kopernika w Toruniu.
Abstract:
Multidrug resistant Gram-negative rods are increasingly isolated from clinical specimens, especially from hospitalized patients. The aim of this study was to evaluate the prevalence of imipenem resistant strains of Gram-negative rods isolated in dr. A. Jurasz University Hospital in Bydgoszcz between 1999 and 2005 and imipenem consumption in this period. Out of 109614 isolated microorganisms, Gram-negative rods were 28,5%, 637 (2,0%) of strains were resistant to imipenem. These strains were isolated mostly from patients hospitalized in intensive care and rehabilitation clinics. Among imipenem-resistant strains Pseudomonas aeruginosa prevailed (88,9%). P. aeruginosa strains were sensitive to colistin, 45,5% of them to aztreonam and 44,0% to ceftazidime. The imipenem consumption in the appropriate years included in this study was: 805,00; 1201,25; 940,00; 1390,00; 1660,00; 1341,25; 1841,25 DDD respectively, and was strictly connected with increasing imipenem-resistant Gram-negative rods isolation.
Insights
Multidrug-resistant Gram-negative rods, particularly Pseudomonas aeruginosa, are rising in hospitals. Imipenem resistance correlates with increased imipenem consumption, highlighting a critical public health concern.
Area of Science:
- Clinical microbiology
- Infectious diseases
- Antimicrobial resistance
Context:
- Increasing isolation of multidrug-resistant Gram-negative rods from clinical settings.
- Focus on hospitalized patients, especially in intensive care and rehabilitation units.
- Need to understand trends in antibiotic resistance and consumption.
Purpose:
- Evaluate the prevalence of imipenem-resistant Gram-negative rods.
- Analyze imipenem consumption patterns between 1999 and 2005.
- Correlate resistance trends with antibiotic usage.
Summary:
- 2.0% of 109,614 isolated microorganisms were imipenem-resistant Gram-negative rods.
- Pseudomonas aeruginosa was the predominant resistant strain (88.9%).
- Imipenem consumption showed a direct correlation with the rise in imipenem-resistant Gram-negative rods.
Impact:
- Highlights the link between imipenem use and resistance.
- Informs antimicrobial stewardship strategies.
- Underscores the threat of Gram-negative bacterial infections in healthcare settings.
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