COPD is a combination of which two conditions?

• A. Chronic bronchitis and emphysema
• B. Pneumonia and tuberculosis
• C. Asthma and bronchiectasis
• D. Pulmonary edema and pleurisy

Answer: (A)

COPD is a chronic, progressive obstructive lung disease made up of two classic conditions: chronic bronchitis and emphysema. Chronic bronchitis involves long-term inflammation and excess mucus production in the airways, leading to a persistent productive cough. Emphysema involves destruction of the walls of the air sacs (alveoli), reducing surface area for gas exchange and causing loss of elastic recoil. The combination of these processes produces the characteristic irreversible airflow limitation seen in COPD.

The other options describe conditions that are not part of COPD: pneumonia and tuberculosis are infectious diseases; asthma and bronchiectasis are different chronic airway diseases with distinct features; pulmonary edema and pleurisy relate to fluid buildup or inflammation around the lungs, not the obstructive pattern that defines COPD.