Predictive value of neutrophil-to-lymphocyte ratio and neutrophil-to-monocyte ratio in severe traumatic brain injury: a retrospective cohort.

Background: The neutrophil-lymphocyte ratio (NLR), the platelet-lymphocyte ratio (PLR), the lymphocyte-monocyte ratio (LMR), the neutrophil-monocyte ratio (NMR) and the systemic immune inflammation index (SII) are associated with clinical outcomes in oncological diseases, cardiovascular diseases, infectious / inflammatory diseases, endocrinological, pulmonary and brain injuries. Here, we investigate its association with hospital mortality in patients with severe traumatic brain injury.

Methods: We retrospectively reviewed clinical data from patients with severe traumatic brain injury (sTBI) who were treated in our department between January 2015 and December 2020.