Annals of the American Thoracic Society: Published on October, 2022Chronic obstructive pulmonary disease (COPD) is a leading cause of death worldwide [1, 2]. COPD exacerbations that are related to poor prognosis and severe COPD exacerbations requiring hospital admission.Beta-adrenoceptor (β-ADR) antagonists, or “beta blockers,” are indicated for...