Bloodstream Infection Pathogen Profiles in ICU and Non-ICU Patients in a Tertiary Hospital in Southern Anhui, China

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ID: 339836
2026
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Abstract
Abstract Bloodstream infection (BSI) is associated with substantial morbidity and mortality, particularly in intensive care unit (ICU) patients. We retrospectively analyzed 723 adults with blood culture-confirmed BSI from January 2025 to March 2026, including 253 ICU and 470 non-ICU patients, and compared clinical characteristics, infection sources, invasive procedures, pathogen distribution, antimicrobial use, resistance phenotypes, and antimicrobial susceptibility. ICU patients had higher rates of septic shock and in-hospital mortality and more frequent catheter-related and lower respiratory tract infections and invasive procedures. Gram-negative bacteria predominated in both groups, with Escherichia coli ranking first. Coagulase-negative staphylococci, Klebsiella pneumoniae, and Enterococcus spp. accounted for larger proportions in ICU patients. Special-use antimicrobial use, particularly carbapenem use, was higher in the ICU. Carbapenem-resistant Acinetobacter baumannii and Pseudomonas aeruginosa were significantly more frequent in ICU patients, whose major Gram-negative isolates also showed broader resistance profiles. These findings support care-setting-specific pathogen and resistance surveillance to inform empirical antimicrobial therapy, antimicrobial stewardship, and infection-control strategies.
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Authors Yingying Li, Beibei Li, Jing Chen, Siyue Xu, Ziheng Wang, Guangping Xu, Kun Yan, Li J, Zhixin Che, Peng Zhang
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Journal letters in applied microbiology
Year 2026
DOI
10.1093/lambio/ovag099
URL
https://doi.org/10.1093/lambio/ovag099
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