Antimicrobial susceptibility of pathogenic bacteria isolated in urine cultures. General Hospital "Isidro Ayora", Loja

Abstract

Urinary tract infections are one of the most common queries in primary care, the etiological agents often develop bacteria! resistance complicates treatment; in this context, this research was conducted in a 2º leve! hospital of Loja in south Ecuador; in samples from patients with medical order urine culture. Were a total of619 samples wich 237 (38.28%) positive. For bacteria identification techniques were used conventional bacteriology, such as culture, count and biochemical tests; for antibiogram was used disk diffusion technique by Kirby Bauer method; screening and confirmatory test for ESBL were use CLSI techniques. Were identified as main causal agents ofITU bacteria belonging to family  Enterobacteriaceae, the most frecuent species E. coli, Gram negative bacteria presented percentage of sensitivity about 70% for cephalosporins third and cuart generation, ciprofloxacin, aztreonam, ampicilin sulbactam y nitrofurantoín and lower at 50% for nalidíxic acid. Also were isolated Gram positive bacteria Staphylococos with 60% sensitivity profile low for peniclin and 10% for Enterococcus sp. Was determined a percentage of 15,52% of BLEE in Enterobacteriaceae with the highest percentage on K. pneumonia, the distribution of BLEE was more common in women from outpatient with a 74% y 70,4% respectívely, with age 33,34% on major 46 years.