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Monotherapy versus combination therapy against carbapenem-resistant Gram-negative bacteria: A retrospective observational study



Monotherapy versus combination therapy against carbapenem-resistant Gram-negative bacteria: A retrospective observational study



Indian Journal of Cancer 53(4): 592-594



Colistin-based combination therapy (CCT) is extensively used to treat infections due to carbapenem-resistant Gram-negative bacteria (CRGNB). There are no data available from India on the usefulness of combination therapy, especially in the oncology setup. The aim of this study was to analyze the clinical effectiveness of CCT over monotherapy in patients with CRGNB. We conducted a retrospective, observational study of patients with CRGNB bloodstream infections in our oncology and bone marrow transplant center. Over a 3-year study period (2011-2014), we could identify 91 patients satisfying study criteria. There was no statistically significant difference in the 28-day mortality between monotherapy and combination therapy arms (mono n = 26, mortality 10 (38.5%); combination n = 65, mortality 28 (40%); P = 0.886). Neutropenic patients with Enterobacteriaceae bloodstream infections performed better with combination therapy (mono n = 7, mortality 6 (85.7%); combination therapy n = 22, mortality 8 (36.4%); P = 0.035). There was no significant difference in the 28-day mortality between the two treatment arms in other subgroups. Our study did not find CCT superior to colistin monotherapy in patients with CRGNB blood stream infections; except in the subgroup of neutropenic patients with Enterobacteriaceae bloodstream infections, where combination therapy performed better.

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Accession: 059987430

Download citation: RISBibTeXText

PMID: 28485360

DOI: 10.4103/0019-509X.204767



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