Asthma USMLE Step 1 Practice Question
A 58-year-old man is brought to the emergency department after being found unconscious from alcohol intoxication. Two days later he develops fever, cough, and focal crackles. Chest imaging shows consolidation in the superior segment of the right lower lobe. Which of the following best explains the location of this patient's pneumonia?
Answer choices
- AAspiration while supine preferentially enters the right lower lobe superior segmentCorrect answer
- BThe carina directs particulate matter equally into both lower lobes
- CLymphatic drainage from the pharynx enters the right middle lobe first
- DThe right pulmonary artery has the highest perfusion at baseline
- EAspiration while standing preferentially enters the left upper lobe apicoposterior segment
- FThe right mainstem bronchus has a more vertical orientation than the left, predisposing to aspiration pneumonia in the right upper lobe
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