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Prior infections are associated with increased mortality from subsequent blood-stream infections among patients with hematological malignancies

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Abstract

Many patients who are evaluated and treated for sepsis have histories of recent infections. The prognostic implications of surviving an infectious process are not well understood. We undertook this study to determine the clinical impact of prior infections among patients with hematological malignancies, a population at high risk for developing and dying from sepsis. The medical records of 203 patients with hematological malignancies and blood-stream infections admitted over a 3-year period to an urban teaching hospital were retrospectively reviewed. The 30-day mortality after blood-stream infection in these high-risk patients was 24 %. There were 46 patients (23 %) who had inpatient infections in the 90 days prior to the index blood-stream infection. History of recent infection portended worse prognosis from blood-stream infection under multivariable analysis [odds ratio (OR) 2.60, p = 0.04, 95 % confidence interval (CI) 1.04–6.47]. There were 86 patients (42 %) who had subsequent infections in the first 90 days after the index blood-stream infection. Patients with subsequent infections had greater mortality during days 91–365 than patients without subsequent infections [hazard ratio (HR) 1.97, p = 0.02, 95 % CI 1.13–3.44]. Recent infections prognosticate worse outcomes from subsequent blood-stream infections for this high-risk population. Further research into the clinical and biochemical reasons for this observation may lead to targets for intervention, and, ultimately, improvements in long-term mortality from sepsis.

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Acknowledgments

Research Training in Respiratory Biology (2 T32 HL007605-28).

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No author has a relevant conflict of interest that might lead to bias.

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Authors and Affiliations

  1. Section of Pulmonary and Critical Care Medicine, Department of Medicine, University of Chicago, Chicago, IL, USA

    J. A. Greenberg, J. B. Hall & J. P. Kress

  2. Section of Infectious Disease and Global Health, Department of Medicine, University of Chicago, Chicago, IL, USA

    M. Z. David & D. L. Pitrak

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  1. J. A. Greenberg
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  2. M. Z. David
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  3. D. L. Pitrak
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  4. J. B. Hall
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  5. J. P. Kress
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Correspondence to J. A. Greenberg.

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Greenberg, J.A., David, M.Z., Pitrak, D.L. et al. Prior infections are associated with increased mortality from subsequent blood-stream infections among patients with hematological malignancies. Eur J Clin Microbiol Infect Dis 33, 1615–1621 (2014). https://doi.org/10.1007/s10096-014-2114-y

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  • DOI: https://doi.org/10.1007/s10096-014-2114-y

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