Eosinophilic and non-eosinophilic COPD patients with chronic respiratory failure: neutrophil-to-lymphocyte ratio as an exacerbation marker

Abstract

The NLR presents an attractive option as an exacerbation marker in COPD patients with CRF due to its simplicity and cost-effectiveness. In COPD patients with CRF, where the NLR is ≥3.54, PE levels are <2%, and subjective symptoms are present, antibiotic treatment should be considered.