[Antibiotic resistance pattern of E.coli isolated from urine culture in 660 army clinical laboratory center in Tehran 2008]

Urinary tract infections are the second most common type of body infection. E.coli is the most common cause of urinary tract infection both sex. For this descriptive study a total 4494 urine samples were examined during one year [2008-2009] in 660 Army Medical Laboratories. The urine cultures and Antibiogram profiles were performed by Kirby- Bauer method according to NCCLS standards. Data analyzed by SPSS software ver. 16. A total of 4494 urine samples were analyzed that out of each 456 samples were showed the significance growth. The most frequently detected gram negative bacterium was E.coli in 257 cases [10.1%]. The most antibiotic resistance rates of E.coli detected from urine culture were to Ampicillin, Co-trimoxazol and Gentamycine with 80%, 37%, 27.7% frequencies respectively. Furthermore, Norofoloxazin and Nitroforantoin had the highest sensitivity 89.6% and 89% respectively. Present findings demonstrated the significance of resistance E.coli that was detected from urine culture to various group of antibiotic drugs caused by the irregular use of antibiotics