Abstract
Klebsiella pneumoniae carbapenemase (KPC)-producing K. pneumoniae (KPC-Kp) is an emergent pathogen in healthcare-associated infections (HAIs). The aim of this study was to describe HAIs due to KPC-Kp, as well as identify mortality risk factors in cancer patients. In patients diagnosed with HAIs due to KPC-Kp between January 2009 and July 2013, we evaluated only the first infection episode of each patient, analyzing mortality separately for patients treated for ≥48 h with at least one antimicrobial agent proven to display in vitro activity against KPC-Kp. We evaluated variables related to the malignancy, the severity and characteristics of the HAI, and the antimicrobial therapy. We identified 83 HAIs due to KPC-Kp. The 30-day mortality was 57.8 % for all infections and 72.7 % for bacteremic infections. Of the 83 patients, 60 patients received ≥48 h of appropriate treatment and 44 (53 %) developed bacteremia. Ten patients (12 %) were neutropenic at HAI diagnosis and 33 (39.8 %) had infection at the tumor site. The most common HAI was urinary tract infection, seen in 26 patients (31.3 %), followed by primary bloodstream infection, seen in 24 patients (28.9 %). Forty-four patients (73.3 %) received combination antimicrobial therapy, most often including polymyxin (68.3 %). Risk factors for 30-day mortality are high sequential organ failure assessment (SOFA) score, need for intensive care stay at diagnosis of infection, and acute kidney injury; the removal of invasive devices related to infection and treatment with effective antibiotics for KPC-Kp are protective factors. In cancer patients, high mortality is associated with HAI due to KPC-Kp and mortality risk factors are more often related to acute infection than to the underlying disease.
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Freire, M.P., Pierrotti, L.C., Filho, H.H.C. et al. Infection with Klebsiella pneumoniae carbapenemase (KPC)-producing Klebsiella pneumoniae in cancer patients. Eur J Clin Microbiol Infect Dis 34, 277–286 (2015). https://doi.org/10.1007/s10096-014-2233-5
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DOI: https://doi.org/10.1007/s10096-014-2233-5