UWorld Q 7601 Respiratory physiology

Pt evaluated for worsening SOB on exertion, 40-pack-year smoking hit. Lung are hyperresonant on percussion and there is diffuse wheezing on auscultation. CXR reveals a flattened diaphragm with a narrow mediastinum, there are decreased bronchovascular markings in the peripheral lung region. Why this is COPD? how to tell it is not restrictive lung diseases ?
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Tags: Step I Source Type: forums