Abstract
Background
Incidence of infection due to extended-spectrum β-lactamase producing Klebsiella pneumoniae (ESBL-KP) has increased rapidly in recent years. However, its prevalence in cancer patients is seldom reported.
Aims
This study was designed to identify the risk factors for bloodstream infections (BSIs) with ESBL-KP, and to understand its susceptibility among cancer patients on antibiotics.
Methods
We conducted a retrospective study with a total of 118 cancer patients between 2009 and 2011 with BSIs, among which 88 were infected with non-ESBL-KP and 30 with ESBL-KP. Patterns of susceptibility, clinical characteristics and mortality were investigated. Multivariate logistic regression model was used to unveil independent risk factors.
Results
On multivariate analysis, length of stay (LOS) (p = 0.025), and prior exposure to cephalosporins (p = 0.006), fluoroquinolones (p = 0.011), macrolides (p = 0.007) and aminoglycosides (p = 0.008) were independent risk factors for BSIs of ESBL-KP. For mortality, there was no significant difference between ESBL-KP and non-ESBL-KP groups (p = 0.431). Moreover, compared with non-ESBL-KP, ESBL-KP displayed reduced sensitivity to aminoglycosides (p < 0.001, except amikacin), fluoroquinolones (p < 0.001), piperacillin–tazobactam (p = 0.005) and trimethoprim–sulfamethoxazole (p < 0.001), respectively.
Conclusions
ESBL-KP exhibited less susceptibility to various non-β-lactamase antibiotics, and infections due to these organisms were related to LOS and preexisting use of antibiotics. Thus, judicious use of all antibiotics should be underscored to reduce the infections caused by ESBL-KP.
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Acknowledgments
We thank Dr. Chenggang Li for the comments of language on the manuscript. This work was supported by grants from the National Nature Science Foundation of China (81302250, 81101745), the National High Technology Research and Development Program (‘863’ Program) of China (2011AA02A111), the Tianjin Municipal Science and Technology Commission (13JCQNJC10300), and the Tianjin Health Bureau of Science and Technology Funds (2012KZ073).
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Li, D., Chen, Y., Zhang, W. et al. Risk factors for hospital-acquired bloodstream infections caused by extended-spectrum β-lactamase Klebsiella pneumoniae among cancer patients. Ir J Med Sci 183, 463–469 (2014). https://doi.org/10.1007/s11845-013-1043-6
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DOI: https://doi.org/10.1007/s11845-013-1043-6