Which statement accurately describes COPD?

Chronic Obstructive Pulmonary Disease (COPD) is characterized by progressive airflow obstruction, which is a defining aspect of the disease. This means that the condition gradually worsens over time and leads to persistent breathing difficulties. The airflow obstruction is primarily due to chronic bronchitis and emphysema, both of which are types of COPD. As the disease progresses, patients may experience increased shortness of breath, decreased exercise tolerance, and higher susceptibility to respiratory infections. This progression of airflow limitation is a critical focus in both the diagnosis and management of COPD, as early intervention can help slow the disease's progression and improve quality of life.

The understanding that COPD is progressive is crucial in developing effective treatment plans aimed at managing symptoms and enhancing lung function over time.