Understanding the stages of COPD is one of the first steps you can take in becoming more proactive in your healthcare. As your COPD progresses, continue working with your doctor to modify your treatment plan as needed. Take note of any changes you notice in your symptoms, what triggers your symptoms to worsen and how COPD affects your ability to do daily activities. See your doctor immediately if you feel unwell or have changes in your health.
The Stages of COPD: Mild COPD or Stage 1—Mild COPD with a FEV1 about 80 percent or more of normal. Moderate COPD or Stage 2—Moderate COPD with a FEV1 between 50 and 80 percent of normal. Severe COPD or Stage 3—Severe emphysema with a FEV1 between 30 and 50 percent of normal. Very Severe COPD or Stage 4—Very severe or End-Stage COPD with a lower FEV1 than Stage 3, or people with low blood oxygen levels and a Stage 3 FEV1.
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