Correct!
5. All of the above.
The cause of the increase in consolidation and respiratory failure is not apparent. Bronchoscopy with bronchoalveolar lavage revealed a neutrophil predominant differential (neutrophils 85%, alveolar macrophages 14%, lymphocytes 1%). Gram stain and smears for pathogens were all negative.
What is the most likely cause of the increase in consolidation and respiratory failure? (Click on the correct answer to be directed to the fifth of 6 pages)