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Global Initiative for Chronic Obstructive Lung Disease (GOLD) guidelines recommend managing chronic obstructive pulmonary disease (COPD) exacerbations with 40-mg prednisone for 5 days, plus oral antibiotics for patients with excessive cough and purulence (NEJM JW Gen Med May 15 2023 and Am J Respir Crit Care Med 2023; 207:819). But whether steroids help all patients or just those with eosinophilia is unclear.
U.K. researchers compared two approaches for COPD exacerbations: blood eosinophil–directed treatment (BET; i.e., 30-mg prednisolone for 14 days if blood eosinophils were ≥2% and placebo for lower eosinophil levels) and standard treatment (i.e., 14 days of oral steroids for all patients). Of 308 patients enrolled, 93 had one or more exac…