Introduction:

The sensitivity of the Escherichia coli bacteria to the different antimicrobials used in urinary tract infections has not been clarified in the Guantanamo municipality.

Objective:

To determine the antimicrobial resistance patterns of this bacterium isolated in urine cultures of outpatient adults with this infection in the municipality of Guantanamo.

Method:

A descriptive and cross-sectional study was carried out from January to March 2019 in the Microbiology Laboratory of the Provincial Center of Hygiene, Epidemiology and Microbiology of Guantanamo. The universe was formed by the total number of patients (N=567) with positive urine cultures, from which a sample consisting of those with positive urine culture was selected in which the Escherichia coli bacteria were isolated (n=341).

Results:

Escherichia coli strains showed a resistance less than 18.0% for cephalexin, gentamicin, kanamycin, ciprofloxacin and nitrofurantoin. The beta-lactam antibiotics (ampicillin and amoxicillin) and macrolides (azithromycin) showed resistance of 61.6, 64.6 and 54.5%, respectively. The resistance of cotrimoxazole and nalidixic acid ranged from 25.0 to 28.6%. The sensitivity of Escherichia coli to nitrofurantoin was high (92.9%). Multiresistance patterns were found in 57 strains (16.6%).

Conclusions:

In the Guantanamo territory, the prescription of antimicrobials of the type of cephalexin, gentamicin, kanamycin, ciprofloxacin and nitrofurantoin seem to be the most beneficial options for the therapy of UTIs by Escherichia coli.

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