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A previously-healthy 24-year-old male is admitted to the intensive care unit following a motorcycle crash. He sustained head trauma requiring an emergency craniotomy, has burns over 30% of his body, and a fractured humerus. His pain is managed with a continuous fentanyl infusion. Two days after admission to the ICU he develops severe hematemesis. What is the mechanism underlying the development of his hematemesis?
Gastric mucosal disruption
Increased gastric acid production
Helicobacter pylori infection
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