Incidence of Microorganisms in Blood Cultures Processed at a Hospital in the State of Zulia and Resistance to Antimicrobial Agents

  • América Paz Professional Practice of Bacteriology. Faculty of Medicine, University of Zulia-Venezuela. Bacteriological Reference Center, Maracaibo University Hospital. Venezuela
  • Alisbeth Fuenmayor Clinical Bacteriology. Faculty of Medicine, University of Zulia-Venezuela.
  • Lisette Sandrea Professional Practice of Bacteriology. Faculty of Medicine, University of Zulia-Venezuela. Bacteriological Reference Center, Maracaibo University Hospital. Venezuela
  • Eyilde Piña Professional Practice of Bacteriology. Faculty of Medicine, University of Zulia-Venezuela. Bacteriological Reference Center, Maracaibo University Hospital. Venezuela
  • María López School of Bioanalysis. Faculty of Medicine, University of Zulia.
  • Paula Navarro School of Bioanalysis. Faculty of Medicine, University of Zulia.
Keywords: Blood culture, bacteremia, fungemia, antimicrobial resistance

Abstract

Bloodstream infections cause significant morbidity and mortality worldwide. To determine incidence of the main microorganisms isolated from blood cultures and their antimicrobial resistance in a university hospital, 31,486 blood culture reports processed from January, 2008, to December, 2012, were reviewed. The percentage of positive blood cultures was 9.49%; the highest number was obtained in intensive care units (36.22%). 3,054 microorganisms were isolated: 67.62% Gram positive, 25.51% Gram negative, 6.84% yeast and 0.03% strict anaerobes. The predominant organisms were coagulase-negative Staphylococcus, S. aureus, Candida spp., Klebsiella pneumoniae, Enterococcus spp., Acinetobacter baumannii, Escherichia coli and Pseudomonas aeruginosa. Both, S. aureus and the coagulase-negative species showed high resistance to oxacillin (72.0% and 88.9%, respectively) and sensitivity to vancomycin. A 26.4% of enterococci (E. faecium almost exclusively) were resistant to vancomycin. Acinetobacter baumannii and K. pneumoniae showed a high rate of resistance to the tested antibiotics. Overall, most of the microorganisms showed a progressive increase in antimicrobial resistance during the five years studied. It is necessary to review and adjust hospital policies for antibiotic use and strengthen control measures for the infected patient.

Published
2015-09-25
How to Cite
1.
Paz A, Fuenmayor A, Sandrea L, Piña E, López M, Navarro P. Incidence of Microorganisms in Blood Cultures Processed at a Hospital in the State of Zulia and Resistance to Antimicrobial Agents. Kasmera [Internet]. 2015Sep.25 [cited 2025Jun.12];43(1):16-3. Available from: https://produccioncientificaluz.org/index.php/kasmera/article/view/20075
Issue
Vol. 43 No. 1 (2015)
Section
Original Articles

Copyright (c) 2015 América Paz, Alisbeth Fuenmayor, Lisette Sandrea, Eyilde Piña, María López, Paula Navarro

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