Your patient is a 52-year-old male complaining of shortness of breath. He is sitting up, alert, and oriented and appears to be in moderate respiratory distress. He states that he "always gets a chest cold in the winter" and describes a three-week history of productive cough and increasing shortness of breath. Physical examination reveals coarse rhonchi to the upper lobes bilaterally, air movement is decreased in the bases, and his skin is cool with peripheral cyanosis. You note that he is overweight and describes an 18-pack-a-year smoking history. Based on these clinical exam findings, the most clinically relevant finding you might also expect is:
