Terradas Robledo, RoserGrau Cerrato, SantiagoBlanch, JordiRiu Camps, MartaSaballs, PereCastells, XavierHorcajada Gallego, Juan PabloKnobel Freud, Hernando2025-01-132025-01-132012Terradas R, Grau S, Blanch J, Riu M, Saballs P, Castells X, et al. Eosinophil count and neutrophil-lymphocyte count ratio as prognostic markers in patients with bacteremia: a retrospective cohort study. PLoS One. 2012;7(8):e42860. DOI: 10.1371/journal.pone.00428601932-6203http://hdl.handle.net/10230/69083Introduction: There is scarce evidence on the use of eosinophil count as a marker of outcome in patients with infection. The aim of this study was to evaluate whether changes in eosinophil count, as well as the neutrophil-lymphocyte count ratio (NLCR), could be used as clinical markers of outcome in patients with bacteremia. Methods: We performed a retrospective study of patients with a first episode of community-acquired or healthcare-related bacteremia during hospital admission between 2004 and 2009. A total of 2,311 patients were included. Cox regression was used to analyze the behaviour of eosinophil count and the NLCR in survivors and non-survivors. Results: In the adjusted analysis, the main independent risk factor for mortality was persistence of an eosinophil count below 0.0454·10(3)/uL (HR = 4.20; 95% CI 2.66-6.62). An NLCR value >7 was also an independent risk factor but was of lesser importance. The mean eosinophil count in survivors showed a tendency to increase rapidly and to achieve normal values between the second and third day. In these patients, the NLCR was <7 between the second and third day. Conclusion: Both sustained eosinopenia and persistence of an NLCR >7 were independent markers of mortality in patients with bacteremia.application/pdfeng© Terradas et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.info:eu-repo/semantics/articlehttp://dx.doi.org/10.1371/journal.pone.0042860EosinophilsBacteremiaDeath ratesBloodBlood countsBacterial diseasesMedical risk factorsWhite blood cellsinfo:eu-repo/semantics/openAccess