Multiple Choice
A 64-year-old man is evaluated for worsening dyspnea on exertion. He has a 40-pack-year smoking history. The lungs are hyperresonant on percussion and there is diffuse wheezing on auscultation. Chest x-ray reveals a flattened diaphragm with a narrow mediastinum, and there are decreased bronchovascular markings in the peripheral lung region. Which of the following lung volume patterns is most likely to be present in this patient? (Each bar represents total lung capacity with different volumes as marked.) 
A) A
B) B
C) C
D) D
Correct Answer:
Verified
Correct Answer:
Verified
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