Medical Student

please answer the following questions: 1. What is the probable MOI? (Mechanism of injury). 2. When the patient FIRST arrives to the ER, what do you do? Should you assess the arm first, or do something else? 3. The first officer on the scene applied a tourniquet, how important is it to know the exact time the tourniquet was applied? 4. What types of imaging would you order? Why?