Chronic obstructive pulmonary disease (COPD), early symptoms include chronic cough, sputum, shortness of breath or dyspnea after strenuous activities, and mild airflow limitation as indicated by pulmonary function tests.
1. The first symptom of early chronic obstructive pulmonary disease is chronic cough and sputum, and the initial cough is intermittent, often obvious in the morning, and there is usually a small amount of white mucus or plasma sputum after coughing.
2. In the early stage of COPD, shortness of breath, shortness of breath and dyspnea may occur after strenuous activities, which can be relieved after resting and can be tolerated. With the aggravation of the disease, shortness of breath and dyspnea may occur in the late stage of the disease during daily activities or at rest.
3. Early chronic obstructive pulmonary function test suggests mild airflow limitation, FEV1/FVC <70% after using bronchodilators, suggesting the existence of airflow limitation, and FEV1 ≥80% of the expected value.
Active medical attention is recommended for the above symptoms.