What abnormality in the complete blood count is often seen in a patient with chronic lung disease that causes significant hypoxemia?

Question

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Chronic lung disease causes hypoxemia due to impaired gas exchange in the lungs. The body responds to this by producing more red blood cells to try and compensate for the lack of oxygen. Therefore, a patient with chronic lung disease is likely to have polycythemia, an abnormal increase in the number of red blood cells.

What Abnormality in the Complete Blood Count Is Often Seen