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Review Question - QID 219990

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QID 219990 (Type "219990" in App Search)
A 32-year-old homeless male presents to the emergency department at 4 AM after being found unconscious in a snow bank. He awakens shortly after arrival and reports swelling, numbness, and tingling in his fingers. On examination, the digits are cold and blue, capillary refill is absent, and two-point discrimination is greater than 15 mm. No other injuries are identified. Which medication is most appropriate at this time?