Bronchitis presents most commonly with which features?

• A. Chronic cough with sputum, cyanosis, and tachypnea.
• B. Acute sharp chest pain and hemoptysis.
• C. Sudden unilateral wheeze.
• D. Exacerbation with fever and rigors.

Answer: (A)

Bronchitis is defined mainly by a productive cough that brings up sputum. In chronic bronchitis, this cough is long-standing and persistent, often with ongoing sputum production, which is why that feature is the most characteristic presentation. Cyanosis and tachypnea can occur when gas exchange is affected in advanced disease or during a severe exacerbation, but they are not the typical starting signs of uncomplicated bronchitis. The other scenarios point to other conditions: sharp chest pain and hemoptysis suggest pleurisy or another pulmonary issue; sudden unilateral wheeze fits asthma or a foreign body; fever with rigors points more toward pneumonia or systemic infection. So the combination of a chronic productive cough with sputum best matches bronchitis, with cyanosis and tachypnea signaling more severe disease rather than the usual presentation.