• J Infect Public Health · Mar 2018

    Multicenter Study

    Epidemiology, management, and outcome of carbapenem-resistant Klebsiella pneumoniae bloodstream infections in hospitals within the same endemic metropolitan area.

    • Maria L Cristina, Cristiano Alicino, Marina Sartini, Valeria Faccio, Anna M Spagnolo, Valerio D Bono, Giovanni Cassola, Anna M De Mite, Maria P Crisalli, Gianluca Ottria, Elisa Schinca, Giuliano L Pinto, Luigi C Bottaro, Claudio Viscoli, Andrea Orsi, Daniele R Giacobbe, Giancarlo Icardi, and Genoan Klebsiella pneumoniae research group.
    • Department of Health Sciences, University of Genoa, Via Pastore 1, 16132, Italy; Hospital Hygiene Unit, Galliera Hospital, Mura delle Cappuccine 14, 16128 Genoa, Italy. Electronic address: cristinaml@unige.it.
    • J Infect Public Health. 2018 Mar 1; 11 (2): 171-177.

    AbstractIn the last decade, carbapenem-resistant Klebsiella pneumoniae (CR-Kp) has become endemic in several countries, including Italy. In the present study, we assessed the differences in epidemiology, management, and mortality of CR-Kp bloodstream infection (BSI) in the three main adult acute-care hospitals of the metropolitan area of Genoa, Italy. From January 2013 to December 2014, all patients with CR-Kp BSI were identified through the computerized microbiology laboratory databases of the three hospitals. The primary endpoints of the study were incidence and characteristics of CR-Kp BSI in hospitals within the same endemic metropolitan area. Secondary endpoints were characteristics of CR-Kp BSI in hospitals with and without internal infectious diseases consultants (IDCs) and 15-day mortality. During the study period, the incidence of healthcare-associated CR-Kp BSI in the entire study population was 1.35 episodes per 10,000 patient-days, with substantial differences between the three hospitals. Patients admitted to the two hospital with internal IDCs were more likely to receive post-susceptibility test combined therapy including carbapenems (77% vs. 26%, p<0.001), adequate post-susceptibility test therapies (86% vs. 52%, p<0.001), and post-susceptibility therapies prescribed by an infectious diseases specialist (84% vs. 14%, p<0.001). Overall, the crude 15-days mortality was 26%. In the final multivariable model, only septic shock at BSI presentation was unfavorably and independently associated with 15-days mortality (odds ratio [OR] 6.7, 95% confidence intervals [CI] 2.6-17.6, p<0.001), while a protective effect was observed for post-susceptibility test combined therapies including a carbapenem (OR 0.11, 95% CI 0.03-0.43, p=0.002). Mortality of CR-Kp remains high. Differences in the incidence of CR-Kp BSI were detected between acute-care centers within the same endemic metropolitan area. Efforts should be made to improve the collaboration and coordination between centers, to prevent further diffusion of CR-Kp.Copyright © 2017 The Authors. Published by Elsevier Ltd.. All rights reserved.

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