Persistent cough with sputum production for at least 3 months out of the year in at least 2 consecutive years in the absence of any other cause?

• A. COPD
• B. Acute Lung Injury
• C. Chronic bronchitis
• D. Pulmonary edema

Answer: (C)

The key idea here is recognizing the classic clinical definition of chronic bronchitis: a productive cough that lasts for at least 3 months in each of 2 consecutive years, with no other identifiable cause. This pattern points to chronic mucus hypersecretion in the large airways—the goblet cells and submucosal glands enlarge, producing more sputum and a persistent cough. While this condition is a COPD phenotype, the defining feature in this question is the duration and sputum production, which matches chronic bronchitis specifically. Acute lung injury is an acute process with rapid onset, not a prolonged yearly pattern. Pulmonary edema involves fluid overload and heart failure symptoms, not the long-standing, sputum-producing cough described. So the described scenario fits chronic bronchitis best.