Pink frothy sputum is most commonly associated with which condition?

Pink frothy sputum is most commonly associated with which condition?

• A. Pneumonia
• B. Pulmonary edema
• C. Asthma
• D. COPD

Answer: (B)

Pink frothy sputum points to fluid-filled alveoli from acute pulmonary edema, usually due to left-sided heart failure. Increased hydrostatic pressure causes fluid to leak into the alveolar spaces; when this edema fluid mixes with air, it forms a frothy, pink-tinged sputum as red cells bleed into the fluid. This presentation is a classic clue in patients with sudden shortness of breath and signs of congestive heart failure. Pneumonia typically produces purulent or colored sputum with fever; asthma tends to have dry or mucoid sputum with wheeze; COPD often involves chronic productive cough but not the characteristic pink froth.

Pink frothy sputum points to fluid-filled alveoli from acute pulmonary edema, usually due to left-sided heart failure. Increased hydrostatic pressure causes fluid to leak into the alveolar spaces; when this edema fluid mixes with air, it forms a frothy, pink-tinged sputum as red cells bleed into the fluid. This presentation is a classic clue in patients with sudden shortness of breath and signs of congestive heart failure. Pneumonia typically produces purulent or colored sputum with fever; asthma tends to have dry or mucoid sputum with wheeze; COPD often involves chronic productive cough but not the characteristic pink froth.