Abstract
Urinary tract infection (UTI) is a common infection in childhood; its diagnosis involves performing a urine culture. To describe the etiology and bacterial susceptibility of the first episode of UTI in children presenting with fever to the emergency room. One hundred and five children (2 months -5 years old) seen at the Hospital Dr. Sotero del Rio in Santiago, between November 2009 and November 2010 were evaluated. A urine specimen was obtained by transurethral catheterization. Urine was cultured and microorganisms were identified and tested for antimicrobial susceptibility. 76.2% (80) of patients were women and 80% (84) were under 18 months. Urine sediment was abnormal in 82.5%. The most frequently isolated microorganism was Escherichia coli (96.1%) showing high susceptibility to aminoglycosides (near 100%), third generation cephalosporins, ciprofloxacin and nitrofurantoin; and low susceptibility to cephalothin (69%) and trimethoprim/sulfamethoxazole (66%). We found one ESBL-producing strain. The most common uropathogen was E. coli with good in vitro susceptibility to aminoglycosides and third generation cephalosporins, which are the recommended initial empirical therapy. E. coli ESBL-producing strains appear as emerging pathogens in community acquired UTIs in children.
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