Which chronic lung condition is described as a long-term bronchial obstruction usually seen in smokers?

• A. COPD
• B. Emphysema
• C. CHF
• D. TB

Answer: (A)

Chronic obstructive pulmonary disease is a long-term condition characterized by progressive airflow limitation, most often in people with a history of smoking. The obstruction in the airways tends to be chronic and not fully reversible, which is why COPD describes a long-standing bronchial obstruction rather than an acute problem. COPD includes chronic bronchitis, where the airways are chronically inflamed and produce mucus, and can also include emphysema, which contributes to airflow limitation by alveolar destruction. Because smoking is a primary risk factor and the issue is sustained bronchial obstruction, COPD best fits the description. Emphysema alone emphasizes alveolar damage rather than bronchial obstruction, CHF is a cardiac cause of shortness of breath with pulmonary edema rather than airway obstruction, and TB is an infectious disease with different pathophysiology.