I'm an expert in respiratory health with a focus on chronic diseases such as COPD. Let's delve into the specifics of Stage 2 COPD. Stage 2 of COPD, also known as moderate COPD, is a progression from the earlier stages of the disease. At this point, the airflow limitation becomes more pronounced and is clearly identifiable through spirometry tests. Symptoms like coughing and the production of sputum or phlegm are more frequent and noticeable in individuals with Stage 2 COPD. Additionally, lung capacity typically decreases to a range of 50-79 percent of what is considered normal. read more >>

During stage 2 COPD or moderate COPD, airflow limitation begins to worsen, becomes more noticeable and can be easily seen on spirometry. Symptoms such as coughing and sputum or phlegm production will increase in stage 2 COPD. ... Typically, stage 2 COPD decreases your lung capacity to 50-79 percent.read more >>