Archives of Clinical Infectious Diseases
Bloodstream infection (BSI) is an important cause of mortality and morbidity and among the most common health-care associated infections. In this study we described the frequency of occurrence and antimicrobial susceptibility patterns of nosocomial and community-acquired BSI isolates from a teaching hospital in Tehran, Iran.
This cross-sectional study was conducted in 850-bed Rasul Akram university hospital from April 2006 to April 2007. All patients with a positive blood culture were enrolled. Antimicrobial susceptibility testing was performed with disk diffusion and E-test MIC.
During the study period, 456 isolates were obtained from blood cultures, from a total of 8818 collected sets, among which 291were felt to represent true bacteremia and 98 were nosocomial. Acinetobacter spp. were the most
We did not observe any vancomycin-resistant strains among isolates of S. aureus. Rifampin and ciprofloxacin showed good activity against most of gram-positive and gram-negative organisms, respectively. Carbapenems (imipenem and meropenem) were highly active against strains of Enterobacteriaceae (E. coli, Klebsiella) that showed resistance to third generation of cephalosporines.
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