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stages of COPD
For all stages: FEV1/FVC < 70%
Staging:
Stage 1: (mild COPD)
- mild airflow limitation
- FEV1 >= 80% predicted
- chronic cough & sputum production may be present
- patient/subject may not be aware of COPD
Stage 2: (moderate COPD)
- worsening airflow limitation
- FEV1 50-80% predicted
- shortness of breath on exertion
- patient/subject typically seeks medical attention at this stage due to chronic respiratory symptoms or exacerbation of disease
Stage 3: (severe COPD)
- further worsening airflow limitation
- FEV1 30-50% predicted
- greater dypnea
- reduced exercise tolerance
- recurrent exacerbations
Stage 4: (very severe COPD)
- severe airflow limitation
- FEV1 < 30% predicted or < 50% predicited + respiratory failure
- quality of life is impaired
- exacerbations may be life-threatening
Related
chronic obstructive pulmonary disease (COPD)
Global Initiative for Chronic Obstructive Lung Disease (GOLD)
References
- Executive Summary: Global Strategy for the Diagnosis,
Management, and Prevention of COPD
Global Initiative for Chronic Obstructive Lung Disease
http://www.goldcopd.org/GuidelinesResources.asp?l1=2&l2=0
- Geriatric Review Syllabus, 8th edition (GRS8)
Durso SC and Sullivan GN (eds)
American Geriatrics Society, 2013
- Medical Knowledge Self Assessment Program (MKSAP) 17,
American College of Physicians, Philadelphia 2015