Antibiotic resistance in uropathogenic Escherichia coli isolated from urinary tract infections out-patients in Kermanshah

Abstract

Background: Urinary tract infections (UTIs) are common cause of infections described in out-patient\’s setting and increase in antibiotic resistance of Escherichia coli, is encountered world-wide. Antibiotic treatment is usually empirical; therefore, this study to provide the knowledge of local resistance pathogen patterns in Kermanshah. Materials and Methods: We conducted a retrospective analysis of all E. coli isolates from urine samples admitted to Kermanshah Central lab between March 2011 and 2012 were included. Antimicrobial resistance was tested by the Kirby-Bauer disk diffusion. Results : This study showed a total of 20,742 samples, 1228 (5.92) were positive for pathogenic bacteria. E. coli were the predominant 801 isolate (65.2\%). Out of the 13 antibiotics tested for E. coli isolates, minimum and maximum resistance were observed to ampicillin (9.4\%) and augmentin (68.6\%). Almost 59-66\% of the uropathogenic E. coli strains were resistant to amikacin, co-trimoxazole, tetracycline and cephalotin and nearly half of them were resistant to nalidixic acid and cephalexin. Conclusion: This study confirms that E. coli is still the most common uropathogen isolated. Augmentin and amikacin are not as a first choice for treatment of UTI in Kermanshah area. Ampicillin and nitrofurantoin may be considered as a fi rst choice empiric agent in out-patients.