Acute exacerbation of chronic obstructive pulmonary disease is a common medical emergency. In recent years, the number of patients hospitalized and dying from acute exacerbation of chronic obstructive pulmonary disease in our country has tended to increase. The cost of treatment is a financial burden for many households.

Chronic obstructive pulmonary disease (COPD) is a common disease characterized by persistent airflow limitation, progressive disease, and is often associated with a chronic inflammatory response in the airways and lung parenchyma to noxious particles and gases. Exacerbations and comorbidities contribute to disease severity in individuals.