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13637 Pathology

A 55-year-old woman following major abdominal surgery has had discomfort and swelling of her left leg for the past week. On physical examination, the leg is slightly difficult to move, and on palpation there is tenderness. A Doppler sonogram shows thrombosis of deep left leg veins. Which of the following mechanisms is most likely to contribute to her condition?

AHypercalcemia
BImmobilization
CIngestion of aspirin
DNitric oxide release
Pathology
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