POLISH JOURNAL OF MICROBIOLOGY, cilt.1, sa.1, ss.1-2, 2022 (SCI-Expanded)
This study aims to investigate trends in bloodstream infections and their antimicrobial
susceptibility profiles over a 12-year period in our hospital. This retrospective study
was carried out in the Bursa Uludag University Hospital, Turkey, during 2008-2019.
Blood cultures from patients were performed by BACTEC System. Isolates were
identified by Phoenix System until 2018, and “matrix-assisted laser desorption
ionization time-of-flight mass spectrometry” (MALDI-TOF MS) in 2019. Antibiotic
susceptibility testing was performed by Phoenix System. Patient data were obtained
from the BD EpiCenter data management system. Escherichia coli was found to be the
most common Gram-negative (11.6%), and coagulase-negative staphylococci were the
most common Gram-positive (10.1%) monomicrobial growth. Overall, there was a
significant increase in rates of extended-spectrum β-lactamase positive E. coli (p:
0.014) and Klebsiella pneumonia (p<0.001), carbapenem-resistant E. coli (p<0.001),
and K. pneumoniae (p<0.001) and colistin-resistant K. pneumoniae (p<0.001) and
Acinetobacter baumannii (p<0.001) over 12 years. Carbapenem and colistin resistance
have increased dramatically in recent years. We believe that regular monitoring of the
distribution of pathogens and antibiotic susceptibility profiles, especially in intensive
care units, can contribute to evidence for the increase in resistant microorganisms and
help prevent their spread with antimicrobial stewardship and infection control policies.