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  • Title: Extended-Spectrum Beta-Lactamase-Producing Enterobacteriaceae-Related Urinary Tract Infection in Kidney Transplant Recipients: Risk Factors, Treatment, and Long-Term Outcome.
    Author: Brakemeier S, Taxeidi SI, Zukunft B, Schmidt D, Gaedeke J, Dürr M, Hansen S, Budde K.
    Journal: Transplant Proc; 2017 Oct; 49(8):1757-1765. PubMed ID: 28923621.
    Abstract:
    BACKGROUND: Prevalence of extended-spectrum beta-lactamase-producing Enterobacteriaceae (ESBL-E) has risen in kidney transplant (KT) patients, with no long-term data so far on graft function or survival. METHODS: KT patients with ESBL-E-positive urine culture were retrospectively analyzed regarding initial adequate antimicrobial therapy, recurrent infection, transplant function, and survival compared with an ESBL-E-negative KT control cohort. RESULTS: ESBL-E-positive KT patients (n = 93) were older (55.5 ± 16.1 vs 49.5 ± 16.8 y; P = .001), presented with higher trough levels of cyclosporine and tacrolimus (121 ± 71 vs 102 ± 32 ng/mL [P = .04]; and 7.9 ± 3.3 vs 7.0 ± 2.3 ng/mL [P = .04], respectively), higher dosages of mycophenolate (1,533 ± 670 vs 1,493 ± 436; P = .001), and more acute rejection episodes within 3 months before diagnosis (12.9% vs 0.8%; P < .0001) compared with control subjects (n = 591). Five-year patient survival was superior in control subjects compared with ESBL-E-positive patients (91.2% vs 83.5%; P = .034) but long-term graft function was similar. Hospitalization rates were higher in patients presenting with ESBL-E-related urinary tract infection (UTI) compared with control subjects with ESBL-E-negative UTI (60.3% vs 31.3%; P = .002) but 5-year graft survival was superior in patients presenting with ESBL-E-related UTI (88.6% vs 69.8%; P = .035) compared with control subjects with ESBL-E-negative UTI. Recurrence rates were similar in patients with or without ESBL-E-related UTI. Initial antibiotic treatment was adequate in 41.2% of patients presenting with ESBL-E-related urosepsis, resulting in a reevaluation of antibiotic stewardship in our clinic. CONCLUSIONS: ESBL-E detection in general was associated with higher mortality, but graft survival in patients with ESBL-E-related UTI was significantly better compared with ESBL-E-negative UTI.
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