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Transplant Proc. 2010 Mar;42(2):486-7. doi: 10.1016/j.transproceed.2010.02.002.

Urinary tract infection caused by extended-spectrum beta-lactamase-producing bacteria in kidney transplant patients.

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Renal Transplantation Unit, Division of Nephrology, Federal University of Juiz de Fora, Minas Gerais, Brazil.


Urinary tract infection (UTI) is a common complication among kidney transplant patients. UTI caused by multi-resistant extended-spectrum beta-lactamase producing bacteria (ESBL) have largely increased among the hospitalized patient population and especially kidney transplant recipients. We retrospectively studied 83 kidney transplant patients to evaluate the incidence and possible causative conditions of ESBL-related UTI over the last 6 years. ESBL production was determined by the antibiotic susceptibility profile of urine cultures. We compared the incidence in two 3-year periods, 2003-2005 (period 1) and 2006-2008 (period 2). An high incidence of ESBL-related UTI (16.8%) was observed in the posttransplant period performing 31% of the overall UTI incidence, with an increase over the last 3 years from 23.8% to 37.5%. ESBL-related UTI was related to previous episodes of UTI (78.6% vs 29.0%; P < .01) and reoperations (50.0% vs 12.9%; P < .05). We observed a progressively increasing incidence of 13%, 38%, and 45% of ESBL-related UTI among first, second, and third episodes, respectively. Age, gender, HLA mismatches, etiology of chronic kidney disease, diabetes mellitus, acute rejection, induction treatment, and type/level of immunosuppressants were similiar between the groups with or without ESBL-related UTI. We observed a high increased incidence of ESBL-related UTI among kidney transplant recipients, and particularly patients with recurrent UTI.

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