Haemophilus influenzae pneumonia is typically associated with which sputum color?

Haemophilus influenzae pneumonia is typically associated with which sputum color?

• A. Green sputum
• B. Pink sputum
• C. Clear sputum
• D. Brown sputum

Answer: (A)

Green sputum reflects purulent, neutrophil-dominated inflammation typical of acute bacterial pneumonia, including Haemophilus influenzae. Neutrophils release myeloperoxidase, which gives the sputum its green color as these bacterial infections produce thick, pus-forming secretions. In contrast, pink sputum points to pulmonary edema or blood-tinged sputum; clear sputum is more common with viral or less inflamed processes; brown sputum can indicate old blood or smoker’s/chronic changes. So, green sputum aligns best with bacterial pneumonia like Haemophilus influenzae.

Green sputum reflects purulent, neutrophil-dominated inflammation typical of acute bacterial pneumonia, including Haemophilus influenzae. Neutrophils release myeloperoxidase, which gives the sputum its green color as these bacterial infections produce thick, pus-forming secretions. In contrast, pink sputum points to pulmonary edema or blood-tinged sputum; clear sputum is more common with viral or less inflamed processes; brown sputum can indicate old blood or smoker’s/chronic changes. So, green sputum aligns best with bacterial pneumonia like Haemophilus influenzae.