Emerging resistant bacteria strains in bloodstream infections of acute leukaemia patients: results of a prospective study by the Rete Ematologica ... View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2016-09-21

AUTHORS

Chiara Cattaneo, P. Zappasodi, V. Mancini, C. Annaloro, F. Pavesi, C. Skert, A. Ferrario, E. Todisco, V. Saccà, L. Verga, A. Passi, M. Da Vià, S. Ferrari, G. Mometto, M. Petullà, A. Nosari, G. Rossi

ABSTRACT

Multiresistant bacterial infections are a potentially life-threatening condition in acute leukaemia (AL) patients. We aimed to better define the very recent epidemiology and outcome of bloodstream infections (BSIs) in a real-life setting. We prospectively collected all consecutive febrile/infectious episodes occurring in AL patients admitted to 9 haematology units. In 293 AL patients, 433 BSIs were diagnosed. Gram-positive (GP) bacteria were isolated in 44.8 % BSI and Gram-negative (GN) in 38.3 %, while polymicrobial aetiology- or fungi-related events were identified in 15.7 and 1.1 % of the cases, respectively. GP was observed more frequently in patients not in complete remission (p = 0.04), while GN during consolidation cycles (p = 0.003). Extended spectrum β-lactamase-producing strains accounted for 23.2 % of enterobacteria. They were associated with previous antibiotic exposure, including fluoroquinolones prophylaxis (p = 0.01). Carbapenem-resistant (CR) strains occurred in 9 % of enterobacteria. Among Pseudomonas aeruginosa strains, 21.6 % were multiresistant. Overall 30-day mortality was 8.5 %. CR GN and multiresistant P. aeruginosa BSIs were independent predictors of death (p = 0.002), as well as relapsed/resistant AL (18.3 %; p = 0.0002) and the presence of pulmonary infiltrates (26.6 %; p < 0.001). Although GP still predominate over GN BSI, the percentage of antibiotic resistant GN strains is considerable in AL patients and it is associated with poor prognosis. More... »

PAGES

1955-1963

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s00277-016-2815-7

DOI

http://dx.doi.org/10.1007/s00277-016-2815-7

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1012919048

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/27650830


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28 schema:description Multiresistant bacterial infections are a potentially life-threatening condition in acute leukaemia (AL) patients. We aimed to better define the very recent epidemiology and outcome of bloodstream infections (BSIs) in a real-life setting. We prospectively collected all consecutive febrile/infectious episodes occurring in AL patients admitted to 9 haematology units. In 293 AL patients, 433 BSIs were diagnosed. Gram-positive (GP) bacteria were isolated in 44.8 % BSI and Gram-negative (GN) in 38.3 %, while polymicrobial aetiology- or fungi-related events were identified in 15.7 and 1.1 % of the cases, respectively. GP was observed more frequently in patients not in complete remission (p = 0.04), while GN during consolidation cycles (p = 0.003). Extended spectrum β-lactamase-producing strains accounted for 23.2 % of enterobacteria. They were associated with previous antibiotic exposure, including fluoroquinolones prophylaxis (p = 0.01). Carbapenem-resistant (CR) strains occurred in 9 % of enterobacteria. Among Pseudomonas aeruginosa strains, 21.6 % were multiresistant. Overall 30-day mortality was 8.5 %. CR GN and multiresistant P. aeruginosa BSIs were independent predictors of death (p = 0.002), as well as relapsed/resistant AL (18.3 %; p = 0.0002) and the presence of pulmonary infiltrates (26.6 %; p < 0.001). Although GP still predominate over GN BSI, the percentage of antibiotic resistant GN strains is considerable in AL patients and it is associated with poor prognosis.
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