An 18-Year-Old, Previously Healthy Man Comes to the Emergency Department

An 18-year-old, previously healthy man comes to the emergency department after being stabbed in the chest.  The patient reports shortness of breath.  Blood pressure is 136/84 mm Hg, pulse is 96/min, and respirations are 20/min.  Oxygen saturation is 96%.  Physical examination reveals a 2.5-cm stab wound on the right lateral chest wall.  Breath sounds are decreased on the right side.  Chest x-ray is shown in the exhibit.  Which of the following changes have most likely occurred in this patient's right hemithorax and right lung compared to his preinjury state?

A)A
B)B
C)C
D)D
E)E

Correct Answer:

Verified

C

This patient's chest x-ray shows no...

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