Purpose: To investigate the antimicrobial resistance rate of 110
Escherichia coli
strains, isolated from UTIs in
Etlik Lokman Hekim Hospital, Etlik, Ankara, Turkey.
Methods: API-20E System (bioMerieux, France) was used to identify
E. coli isolates. Antimicrobial
susceptibility testing was conducted on Mueller-Hinton Agar plates (Merck, Germany) using agar disc
diffusion method and the results were expressed as susceptible or resistant according to the criteria
recommended by the Clinical and Laboratory Standarts Institute (CLSI).
Results: The resistance rates detected were 56 % to ampicillin, 24 % to ampicillin sulbactam, 9 % to
gentamicin, 15 % to ciprofloxacin, 36 % to trimethoprim sulfamethoxazole, 12 % to cefazolin, and 7 % to
cefuroxime. All isolates tested were susceptible to fosfomycin and nitrofurantoin.
Conclusion: When the high resistance rates in Turkey are taken into consideration, antimicrobial agent
usage policies and empirical therapies should be based on antimicrobial resistance surveillance studies.
