| Sumario: | A descriptive cross-sectional study in patients with hard-to-heal venous ulcers, whose objective is to identify the prevalence of Gram-negative rods (GNR) in venous ulcers presenting clinical signs of infection; analyze the susceptibility profile of such ulcers and detect ESBL, AmpC and metallo-β-lactamase production. We identified 69 individuals. The samples were gathered by means of an interview, clinical exam, photographic record and a swab of the lesions. Specimens were submitted to laboratorial evaluation for microbiological analysis. A total of 98 lesions were evaluated, of which BGN presented in 74.5%. There was a prevalence of P. aeruginosa and Escherichia coli. The mircoorganisms were sensitive to most antimicrobials. In terms of resistance, tetracycline and cefoxitine were discarded. ESBL was not detected; AmpC was verified in 37.5% of the CESP group and metalo-β-lactamase in 8.0% of P. aeruginosa. Our study points to the need for microbiological vigilance of patients with hard-to-heal venous ulcers.
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