Chronic Obstr Pulm Dis
July 2024
Background: The blood eosinophil count (BEC) is an effective biomarker for predicting inhaled corticosteroid responsiveness in patients with chronic obstructive pulmonary disease (COPD).
Methods: A 12-month prospective observational study was conducted in patients with COPD. BEC was measured at enrollment, and after 6 and 12 months.