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COPD is a common progressive disorder characterized by airway ob- struction with little or no reversibility. There are two classic types: Chronic bronchitis and Emphysema

This is a draft cheat sheet. It is a work in progress and is not finished yet.

Risk Factors

- Tobacco smoke (casue of almost 90% of COPD cases)
- α1-Ant­itr­ypsin deficiency (risk is even worse in combin­ation with smoking)
- Enviro­nmental factors (such as second­-hand smoke)
- Chronic asthma
- People affected are usually > 35 years old


Chronic Bronchitis
It is a clinical diagnosis: chronic cough productive of sputum for at least 3 months per year for at least 2 consec­utive years.
It is a pathologic diagnosis: permanent enlarg­ement of air spaces distal to terminal bronch­ioles due to destru­ction of alveolar walls.